1. added wxAssertIsEqual() function to be used in wxASSERT()

[wxWidgets.git] / src / common / dbtable.cpp

diff --git a/src/common/dbtable.cpp b/src/common/dbtable.cpp
index 1e603781ed48ca660a30dc371be2d4149be4d4cd..e5e5fa368dbe2f68ab7ae552183184d4cd517bb7 100644 (file)
--- a/src/common/dbtable.cpp
+++ b/src/common/dbtable.cpp
@@ -1,17 +1,15 @@
 ///////////////////////////////////////////////////////////////////////////////
 // Name:        dbtable.cpp
 ///////////////////////////////////////////////////////////////////////////////
 // Name:        dbtable.cpp

-// Purpose:     Implementation of the wxTable class.
+// Purpose:     Implementation of the wxDbTable class.

 // Author:      Doug Card
 // Author:      Doug Card

-// Mods:                        April 1999
-//                                             -Dynamic cursor support - Only one predefined cursor, as many others as
-//                                                     you need may be created on demand
-//                                             -Reduced number of active cursors significantly 
-//                                             -Query-Only wxTable objects 
+// Modified by: George Tasker
+//              Bart Jourquin
+//              Mark Johnson

 // Created:     9.96
 // RCS-ID:      $Id$
 // Copyright:   (c) 1996 Remstar International, Inc.
 // Licence:     wxWindows licence, plus:
 // Created:     9.96
 // RCS-ID:      $Id$
 // Copyright:   (c) 1996 Remstar International, Inc.
 // Licence:     wxWindows licence, plus:

-// Notice:              This class library and its intellectual design are free of charge for use,
+// Notice:      This class library and its intellectual design are free of charge for use,

 //              modification, enhancement, debugging under the following conditions:
 //              1) These classes may only be used as part of the implementation of a
 //                 wxWindows-based application
 //              modification, enhancement, debugging under the following conditions:
 //              1) These classes may only be used as part of the implementation of a
 //                 wxWindows-based application


@@ -30,55 +28,59 @@
 // Use this line for wxWindows v1.x
 //#include "wx_ver.h"
 // Use this line for wxWindows v2.x
 // Use this line for wxWindows v1.x
 //#include "wx_ver.h"
 // Use this line for wxWindows v2.x

-#include "wx/version.h"

 #include  "wx/wxprec.h"
 #include  "wx/wxprec.h"

+#include "wx/version.h"

 
 #if wxMAJOR_VERSION == 2
 
 #if wxMAJOR_VERSION == 2

-#      ifdef __GNUG__
-#      pragma implementation "dbtable.h"
-#      endif
+    #ifdef __GNUG__
+        #pragma implementation "dbtable.h"
+    #endif

 #endif
 
 #ifdef DBDEBUG_CONSOLE
 #endif
 
 #ifdef DBDEBUG_CONSOLE

-        #include <iostream.h>
+    #include "wx/ioswrap.h"

 #endif
 
 #endif
 

+

 #ifdef    __BORLANDC__
 #ifdef    __BORLANDC__

-        #pragma hdrstop
+    #pragma hdrstop

 #endif  //__BORLANDC__
 
 #if wxMAJOR_VERSION == 2
 #endif  //__BORLANDC__
 
 #if wxMAJOR_VERSION == 2

-        #ifndef WX_PRECOMP
-                #include "wx/string.h"
-                #include "wx/object.h"
-                #include "wx/list.h"
-                #include "wx/utils.h"
-                #include "wx/msgdlg.h"
-       #endif
-       #include "wx/filefn.h"
+    #ifndef WX_PRECOMP
+        #include "wx/string.h"
+        #include "wx/object.h"
+        #include "wx/list.h"
+        #include "wx/utils.h"
+        #include "wx/msgdlg.h"
+        #include "wx/log.h"
+    #endif
+    #include "wx/filefn.h"

 #endif
 
 #if wxMAJOR_VERSION == 1
 #endif
 
 #if wxMAJOR_VERSION == 1

-#      if defined(wx_msw) || defined(wx_x)
-#              ifdef WX_PRECOMP
-#                      include "wx_prec.h"
-#              else
-#                      include "wx.h"
-#              endif
-#      endif
-#      define wxUSE_ODBC 1
+#   if defined(wx_msw) || defined(wx_x)
+#       ifdef WX_PRECOMP
+#           include "wx_prec.h"
+#       else
+#           include "wx.h"
+#       endif
+#   endif
+#   define wxUSE_ODBC 1

 #endif
 
 #endif
 

+

 #if wxUSE_ODBC
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #if wxUSE_ODBC
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>

-#include <assert.h>
+//#include <assert.h>
+

 #if   wxMAJOR_VERSION == 1
 #if   wxMAJOR_VERSION == 1

-       #include "table.h"
+    #include "table.h"

 #elif wxMAJOR_VERSION == 2
 #elif wxMAJOR_VERSION == 2

-       #include "wx/dbtable.h"
+    #include "wx/dbtable.h"

 #endif
 
 #ifdef __UNIX__
 #endif
 
 #ifdef __UNIX__


@@ -96,1755 +98,2367 @@ ULONG lastTableID = 0;
 
 
 #ifdef __WXDEBUG__
 
 
 #ifdef __WXDEBUG__

-       wxList TablesInUse;
+    wxList TablesInUse;

 #endif
 
 
 #endif
 
 

-/********** wxTable::wxTable() **********/
-wxTable::wxTable(wxDB *pwxDB, const char *tblName, const int nCols,
-                                       const char *qryTblName, bool qryOnly, const char *tblPath)
+/********** wxDbColDef::wxDbColDef() Constructor **********/
+wxDbColDef::wxDbColDef()

 {
 {

-       pDb                                     = pwxDB;                                        // Pointer to the wxDB object
-       henv                                    = 0;
-       hdbc                                    = 0;
-       hstmt                                   = 0;
-       hstmtDefault            = 0;                                            // Initialized below
-       hstmtCount                      = 0;                                            // Initialized first time it is needed
-       hstmtInsert                     = 0;
-       hstmtDelete                     = 0;
-       hstmtUpdate                     = 0;
-       hstmtInternal           = 0;
-       colDefs                         = 0;
-       tableID                         = 0;
-       noCols                          = nCols;                                        // No. of cols in the table
-       where                                   = 0;                                            // Where clause
-       orderBy                         = 0;                                            // Order By clause
-       from                                    = 0;                                            // From clause
-       selectForUpdate = FALSE;                                        // SELECT ... FOR UPDATE; Indicates whether to include the FOR UPDATE phrase
-       queryOnly                       = qryOnly;
-
-       assert (tblName);
-
-       wxStrcpy(tableName, tblName);                           // Table Name
-       if (tblPath)
-               wxStrcpy(tablePath, tblPath);                           // Table Path - used for dBase files
-
-       if (qryTblName)                                                         // Name of the table/view to query
-               wxStrcpy(queryTableName, qryTblName);
-       else
-               wxStrcpy(queryTableName, tblName);
-
-//     assert(pDb);  // Assert is placed after table name is assigned for error reporting reasons
-       if (!pDb)
-               return;
-
-       pDb->nTables++;
-
-       char s[200];
-       tableID = ++lastTableID;
-       sprintf(s, "wxTable constructor (%-20s) tableID:[%6lu] pDb:[%p]", tblName,tableID,pDb);
+    Initialize();
+}  // Constructor
+
+
+bool wxDbColDef::Initialize()
+{
+    ColName[0]      = 0;
+    DbDataType      = DB_DATA_TYPE_INTEGER;
+    SqlCtype        = SQL_C_LONG;
+    PtrDataObj      = NULL;
+    SzDataObj       = 0;
+    KeyField        = FALSE;
+    Updateable      = FALSE;
+    InsertAllowed   = FALSE;
+    DerivedCol      = FALSE;
+    CbValue         = 0;
+    Null = FALSE;
+
+    return TRUE;
+}  // wxDbColDef::Initialize()
+
+
+/********** wxDbTable::wxDbTable() Constructor **********/
+wxDbTable::wxDbTable(wxDb *pwxDb, const wxString &tblName, const UWORD numColumns,
+                    const wxString &qryTblName, bool qryOnly, const wxString &tblPath)
+{
+    if (!initialize(pwxDb, tblName, numColumns, qryTblName, qryOnly, tblPath))
+        cleanup();
+}  // wxDbTable::wxDbTable()
+
+
+/***** DEPRECATED: use wxDbTable::wxDbTable() format above *****/
+wxDbTable::wxDbTable(wxDb *pwxDb, const wxString &tblName, const UWORD numColumns,
+                    const wxChar *qryTblName, bool qryOnly, const wxString &tblPath)
+{
+    wxString tempQryTblName;
+    tempQryTblName = qryTblName;
+    if (!initialize(pwxDb, tblName, numColumns, tempQryTblName, qryOnly, tblPath))
+        cleanup();
+}  // wxDbTable::wxDbTable()
+
+
+/********** wxDbTable::~wxDbTable() **********/
+wxDbTable::~wxDbTable()
+{
+    this->cleanup();
+}  // wxDbTable::~wxDbTable()
+
+
+bool wxDbTable::initialize(wxDb *pwxDb, const wxString &tblName, const UWORD numColumns,
+                    const wxString &qryTblName, bool qryOnly, const wxString &tblPath)
+{
+    // Initializing member variables
+    pDb                 = pwxDb;                    // Pointer to the wxDb object
+    henv                = 0;
+    hdbc                = 0;
+    hstmt               = 0;
+    hstmtDefault        = 0;                        // Initialized below
+    hstmtCount          = 0;                        // Initialized first time it is needed
+    hstmtInsert         = 0;
+    hstmtDelete         = 0;
+    hstmtUpdate         = 0;
+    hstmtInternal       = 0;
+    colDefs             = 0;
+    tableID             = 0;
+    noCols              = numColumns;               // Number of cols in the table
+    where.Empty();                                  // Where clause
+    orderBy.Empty();                                // Order By clause
+    from.Empty();                                   // From clause
+    selectForUpdate     = FALSE;                    // SELECT ... FOR UPDATE; Indicates whether to include the FOR UPDATE phrase
+    queryOnly           = qryOnly;
+    insertable          = TRUE;
+    tablePath.Empty();
+    tableName.Empty();
+    queryTableName.Empty();
+
+    wxASSERT(tblName.Length());
+    wxASSERT(pDb);
+
+    if (!pDb)
+        return FALSE;
+
+    tableName = tblName;                        // Table Name
+    if (tblPath.Length())
+        tablePath = tblPath;                    // Table Path - used for dBase files
+    else
+        tablePath.Empty();
+    
+    if (qryTblName.Length())                    // Name of the table/view to query
+        queryTableName = qryTblName;
+    else
+        queryTableName = tblName;
+    
+    pDb->incrementTableCount();
+    
+    wxString s;
+    tableID = ++lastTableID;
+    s.Printf(wxT("wxDbTable constructor (%-20s) tableID:[%6lu] pDb:[%p]"), tblName.c_str(), tableID, pDb);

 
 #ifdef __WXDEBUG__
 
 #ifdef __WXDEBUG__

-       CstructTablesInUse *tableInUse;
-       tableInUse = new CstructTablesInUse();
-       tableInUse->tableName = tblName;
-       tableInUse->tableID = tableID;
-       tableInUse->pDb = pDb;
-       TablesInUse.Append(tableInUse);
+    wxTablesInUse *tableInUse;
+    tableInUse            = new wxTablesInUse();
+    tableInUse->tableName = tblName;
+    tableInUse->tableID   = tableID;
+    tableInUse->pDb       = pDb;
+    TablesInUse.Append(tableInUse);

 #endif
 #endif

-
-       pDb->WriteSqlLog(s);
-
-       // Grab the HENV and HDBC from the wxDB object
-       henv = pDb->henv;
-       hdbc = pDb->hdbc;
-
-       // Allocate space for column definitions
-       if (noCols)
-               colDefs = new CcolDef[noCols];  // Points to the first column defintion
-
-       // Allocate statement handles for the table
-       if (!queryOnly)
-       {
-               // Allocate a separate statement handle for performing inserts
-               if (SQLAllocStmt(hdbc, &hstmtInsert) != SQL_SUCCESS)
-                       pDb->DispAllErrors(henv, hdbc);
-               // Allocate a separate statement handle for performing deletes
-               if (SQLAllocStmt(hdbc, &hstmtDelete) != SQL_SUCCESS)
-                       pDb->DispAllErrors(henv, hdbc);
-               // Allocate a separate statement handle for performing updates
-               if (SQLAllocStmt(hdbc, &hstmtUpdate) != SQL_SUCCESS)
-                       pDb->DispAllErrors(henv, hdbc);
-       }
-       // Allocate a separate statement handle for internal use
-       if (SQLAllocStmt(hdbc, &hstmtInternal) != SQL_SUCCESS)
-               pDb->DispAllErrors(henv, hdbc);
-
-       // Set the cursor type for the statement handles
-       cursorType = SQL_CURSOR_STATIC;
-       if (SQLSetStmtOption(hstmtInternal, SQL_CURSOR_TYPE, cursorType) != SQL_SUCCESS)
-       {
-               // Check to see if cursor type is supported
-               pDb->GetNextError(henv, hdbc, hstmtInternal);
-               if (! wxStrcmp(pDb->sqlState, "01S02"))  // Option Value Changed
-               {
-                       // Datasource does not support static cursors.  Driver
-                       // will substitute a cursor type.  Call SQLGetStmtOption()
-                       // to determine which cursor type was selected.
-                       if (SQLGetStmtOption(hstmtInternal, SQL_CURSOR_TYPE, &cursorType) != SQL_SUCCESS)
-                               pDb->DispAllErrors(henv, hdbc, hstmtInternal);
+    
+    pDb->WriteSqlLog(s);
+    
+    // Grab the HENV and HDBC from the wxDb object
+    henv = pDb->GetHENV();
+    hdbc = pDb->GetHDBC();
+    
+    // Allocate space for column definitions
+    if (noCols)
+        colDefs = new wxDbColDef[noCols];  // Points to the first column definition
+    
+    // Allocate statement handles for the table
+    if (!queryOnly)
+    {
+        // Allocate a separate statement handle for performing inserts
+        if (SQLAllocStmt(hdbc, &hstmtInsert) != SQL_SUCCESS)
+            pDb->DispAllErrors(henv, hdbc);
+        // Allocate a separate statement handle for performing deletes
+        if (SQLAllocStmt(hdbc, &hstmtDelete) != SQL_SUCCESS)
+            pDb->DispAllErrors(henv, hdbc);
+        // Allocate a separate statement handle for performing updates
+        if (SQLAllocStmt(hdbc, &hstmtUpdate) != SQL_SUCCESS)
+            pDb->DispAllErrors(henv, hdbc);
+    }
+    // Allocate a separate statement handle for internal use
+    if (SQLAllocStmt(hdbc, &hstmtInternal) != SQL_SUCCESS)
+        pDb->DispAllErrors(henv, hdbc);
+    
+    // Set the cursor type for the statement handles
+    cursorType = SQL_CURSOR_STATIC;
+    
+    if (SQLSetStmtOption(hstmtInternal, SQL_CURSOR_TYPE, cursorType) != SQL_SUCCESS)
+    { 
+        // Check to see if cursor type is supported
+        pDb->GetNextError(henv, hdbc, hstmtInternal);
+        if (! wxStrcmp(pDb->sqlState, wxT("01S02")))  // Option Value Changed
+        {
+            // Datasource does not support static cursors.  Driver
+            // will substitute a cursor type.  Call SQLGetStmtOption()
+            // to determine which cursor type was selected.
+            if (SQLGetStmtOption(hstmtInternal, SQL_CURSOR_TYPE, &cursorType) != SQL_SUCCESS)
+                pDb->DispAllErrors(henv, hdbc, hstmtInternal);

 #ifdef DBDEBUG_CONSOLE
 #ifdef DBDEBUG_CONSOLE

-                       cout << "Static cursor changed to: ";
-                       switch(cursorType)
-                       {
-                       case SQL_CURSOR_FORWARD_ONLY:
-                               cout << "Forward Only";         break;
-                       case SQL_CURSOR_STATIC:
-                               cout << "Static";                               break;
-                       case SQL_CURSOR_KEYSET_DRIVEN:
-                               cout << "Keyset Driven";        break;
-                       case SQL_CURSOR_DYNAMIC:
-                               cout << "Dynamic";                      break;
-                       }
-                       cout << endl << endl;
+            cout << wxT("Static cursor changed to: ");
+            switch(cursorType)
+            {
+            case SQL_CURSOR_FORWARD_ONLY:
+                cout << wxT("Forward Only");
+                break;
+            case SQL_CURSOR_STATIC:
+                cout << wxT("Static");
+                break;
+            case SQL_CURSOR_KEYSET_DRIVEN:
+                cout << wxT("Keyset Driven");
+                break;
+            case SQL_CURSOR_DYNAMIC:
+                cout << wxT("Dynamic");
+                break;
+            }
+            cout << endl << endl;

 #endif
 #endif

-               }
-               else
-               {
-                       pDb->DispNextError();
-                       pDb->DispAllErrors(henv, hdbc, hstmtInternal);
-               }
-       }
+            // BJO20000425
+            if (pDb->FwdOnlyCursors() && cursorType != SQL_CURSOR_FORWARD_ONLY)
+            {
+                // Force the use of a forward only cursor...
+                cursorType = SQL_CURSOR_FORWARD_ONLY;
+                if (SQLSetStmtOption(hstmtInternal, SQL_CURSOR_TYPE, cursorType) != SQL_SUCCESS)
+                {
+                    // Should never happen
+                    pDb->GetNextError(henv, hdbc, hstmtInternal);
+                    return FALSE;
+                }
+            }
+        }
+        else
+        {
+            pDb->DispNextError();
+            pDb->DispAllErrors(henv, hdbc, hstmtInternal);
+        }
+    }

 #ifdef DBDEBUG_CONSOLE
 #ifdef DBDEBUG_CONSOLE

-       else
-               cout << "Cursor Type set to STATIC" << endl << endl;
+    else
+        cout << wxT("Cursor Type set to STATIC") << endl << endl;

 #endif
 #endif

-
-       if (!queryOnly)
-       {
-               // Set the cursor type for the INSERT statement handle
-               if (SQLSetStmtOption(hstmtInsert, SQL_CURSOR_TYPE, SQL_CURSOR_FORWARD_ONLY) != SQL_SUCCESS)
-                       pDb->DispAllErrors(henv, hdbc, hstmtInsert);
-               // Set the cursor type for the DELETE statement handle
-               if (SQLSetStmtOption(hstmtDelete, SQL_CURSOR_TYPE, SQL_CURSOR_FORWARD_ONLY) != SQL_SUCCESS)
-                       pDb->DispAllErrors(henv, hdbc, hstmtDelete);
-               // Set the cursor type for the UPDATE statement handle
-               if (SQLSetStmtOption(hstmtUpdate, SQL_CURSOR_TYPE, SQL_CURSOR_FORWARD_ONLY) != SQL_SUCCESS)
-                       pDb->DispAllErrors(henv, hdbc, hstmtUpdate);
-       }
-
-       // Make the default cursor the active cursor
-       hstmtDefault = NewCursor(FALSE,FALSE);
-       assert(hstmtDefault);
-       hstmt = *hstmtDefault;
-
-}  // wxTable::wxTable()
-
-/********** wxTable::~wxTable() **********/
-wxTable::~wxTable()
+    
+    if (!queryOnly)
+    {
+        // Set the cursor type for the INSERT statement handle
+        if (SQLSetStmtOption(hstmtInsert, SQL_CURSOR_TYPE, SQL_CURSOR_FORWARD_ONLY) != SQL_SUCCESS)
+            pDb->DispAllErrors(henv, hdbc, hstmtInsert);
+        // Set the cursor type for the DELETE statement handle
+        if (SQLSetStmtOption(hstmtDelete, SQL_CURSOR_TYPE, SQL_CURSOR_FORWARD_ONLY) != SQL_SUCCESS)
+            pDb->DispAllErrors(henv, hdbc, hstmtDelete);
+        // Set the cursor type for the UPDATE statement handle
+        if (SQLSetStmtOption(hstmtUpdate, SQL_CURSOR_TYPE, SQL_CURSOR_FORWARD_ONLY) != SQL_SUCCESS)
+            pDb->DispAllErrors(henv, hdbc, hstmtUpdate);
+    }
+    
+    // Make the default cursor the active cursor
+    hstmtDefault = GetNewCursor(FALSE,FALSE);
+    wxASSERT(hstmtDefault);
+    hstmt = *hstmtDefault;
+
+    return TRUE;
+
+}  // wxDbTable::initialize()
+
+
+void wxDbTable::cleanup()

 {
 {

-       char s[80];
-       if (pDb)
-       {
-               sprintf(s, "wxTable destructor (%-20s) tableID:[%6lu] pDb:[%p]", tableName,tableID,pDb);
-               pDb->WriteSqlLog(s);
-       }
+    wxString s;
+    if (pDb)
+    {
+        s.Printf(wxT("wxDbTable destructor (%-20s) tableID:[%6lu] pDb:[%p]"), tableName.c_str(), tableID, pDb);
+        pDb->WriteSqlLog(s);
+    }

 
 #ifdef __WXDEBUG__
 
 #ifdef __WXDEBUG__

-       if (tableID)
-       {
-               bool found = FALSE;
-               wxNode *pNode;
-               pNode = TablesInUse.First();
-               while (pNode && !found)
-               {
-                       if (((CstructTablesInUse *)pNode->Data())->tableID == tableID)
-                       {
-                               found = TRUE;
-                               if (!TablesInUse.DeleteNode(pNode))
-                                       wxMessageBox (s,"Unable to delete node!");
-                       }
-                       else
-                               pNode = pNode->Next();
-               }
-               if (!found)
-               {
-                       char msg[250];
-                       sprintf(msg,"Unable to find the tableID in the linked\nlist of tables in use.\n\n%s",s);
-                       wxMessageBox (msg,"NOTICE...");
-               }
-       }
+    if (tableID)
+    {
+        TablesInUse.DeleteContents(TRUE);
+        bool found = FALSE;
+
+        wxNode *pNode;
+        pNode = TablesInUse.First();
+        while (pNode && !found)
+        {
+            if (((wxTablesInUse *)pNode->Data())->tableID == tableID)
+            {
+                found = TRUE;
+                if (!TablesInUse.DeleteNode(pNode))
+                    wxLogDebug (s,wxT("Unable to delete node!"));
+            }
+            else
+                pNode = pNode->Next();
+        }
+        if (!found)
+        {
+            wxString msg;
+            msg.Printf(wxT("Unable to find the tableID in the linked\nlist of tables in use.\n\n%s"),s.c_str());
+            wxLogDebug (msg,wxT("NOTICE..."));
+        }
+    }

 #endif
 
 #endif
 

-       // Decrement the wxDB table count
-       if (pDb)
-               pDb->nTables--;
-
-       // Delete memory allocated for column definitions
-       if (colDefs)
-               delete [] colDefs;
-
-       // Free statement handles
-       if (!queryOnly)
-       {
-               if (hstmtInsert)
-                       if (SQLFreeStmt(hstmtInsert, SQL_DROP) != SQL_SUCCESS)
-                               pDb->DispAllErrors(henv, hdbc);
-               if (hstmtDelete)
-                       if (SQLFreeStmt(hstmtDelete, SQL_DROP) != SQL_SUCCESS)
-                               pDb->DispAllErrors(henv, hdbc);
-               if (hstmtUpdate)
-                       if (SQLFreeStmt(hstmtUpdate, SQL_DROP) != SQL_SUCCESS)
-                               pDb->DispAllErrors(henv, hdbc);
-       }
-       if (hstmtInternal)
-               if (SQLFreeStmt(hstmtInternal, SQL_DROP) != SQL_SUCCESS)
-                       pDb->DispAllErrors(henv, hdbc);
-
-       // Delete dynamically allocated cursors
-       if (hstmtDefault)
-               DeleteCursor(hstmtDefault);
-       if (hstmtCount)
-               DeleteCursor(hstmtCount);
-
-}  // wxTable::~wxTable()
+    // Decrement the wxDb table count
+    if (pDb)
+        pDb->decrementTableCount();
+
+    // Delete memory allocated for column definitions
+    if (colDefs)
+        delete [] colDefs;
+
+    // Free statement handles
+    if (!queryOnly)
+    {
+        if (hstmtInsert)
+        {
+/*
+ODBC 3.0 says to use this form
+            if (SQLFreeHandle(*hstmtDel, SQL_DROP) != SQL_SUCCESS)
+*/
+            if (SQLFreeStmt(hstmtInsert, SQL_DROP) != SQL_SUCCESS)
+                pDb->DispAllErrors(henv, hdbc);
+        }
+
+        if (hstmtDelete)
+        {
+/*
+ODBC 3.0 says to use this form
+            if (SQLFreeHandle(*hstmtDel, SQL_DROP) != SQL_SUCCESS)
+*/
+            if (SQLFreeStmt(hstmtDelete, SQL_DROP) != SQL_SUCCESS)
+                pDb->DispAllErrors(henv, hdbc);
+        }
+
+        if (hstmtUpdate)
+        {
+/*
+ODBC 3.0 says to use this form
+            if (SQLFreeHandle(*hstmtDel, SQL_DROP) != SQL_SUCCESS)
+*/
+            if (SQLFreeStmt(hstmtUpdate, SQL_DROP) != SQL_SUCCESS)
+                pDb->DispAllErrors(henv, hdbc);
+        }
+    }
+
+    if (hstmtInternal)
+    {
+        if (SQLFreeStmt(hstmtInternal, SQL_DROP) != SQL_SUCCESS)
+            pDb->DispAllErrors(henv, hdbc);
+    }
+
+    // Delete dynamically allocated cursors
+    if (hstmtDefault)
+        DeleteCursor(hstmtDefault);
+
+    if (hstmtCount)
+        DeleteCursor(hstmtCount);
+}  // wxDbTable::cleanup()
+

 
 /***************************** PRIVATE FUNCTIONS *****************************/
 
 
 /***************************** PRIVATE FUNCTIONS *****************************/
 

-/********** wxTable::bindInsertParams() **********/
-bool wxTable::bindInsertParams(void)
+
+/********** wxDbTable::bindParams() **********/
+bool wxDbTable::bindParams(bool forUpdate)
+{
+    wxASSERT(!queryOnly);
+    if (queryOnly)
+        return(FALSE);
+    
+    SWORD   fSqlType    = 0;
+    UDWORD  precision   = 0;
+    SWORD   scale       = 0;
+    
+    // Bind each column of the table that should be bound
+    // to a parameter marker
+    int i;
+    UWORD colNo;
+
+    for (i=0, colNo=1; i < noCols; i++)
+    {
+        if (forUpdate)
+        {
+            if (!colDefs[i].Updateable)
+                continue;
+        }
+        else
+        {
+            if (!colDefs[i].InsertAllowed)
+                continue;
+        }
+
+        switch(colDefs[i].DbDataType)
+        {
+            case DB_DATA_TYPE_VARCHAR:
+                fSqlType = pDb->GetTypeInfVarchar().FsqlType;
+                precision = colDefs[i].SzDataObj;
+                scale = 0;
+                if (colDefs[i].Null)
+                    colDefs[i].CbValue = SQL_NULL_DATA;
+                else
+                    colDefs[i].CbValue = SQL_NTS;
+                break;
+            case DB_DATA_TYPE_INTEGER:
+                fSqlType = pDb->GetTypeInfInteger().FsqlType;
+                precision = pDb->GetTypeInfInteger().Precision;
+                scale = 0;
+                if (colDefs[i].Null)
+                    colDefs[i].CbValue = SQL_NULL_DATA;
+                else
+                    colDefs[i].CbValue = 0;
+                break;
+            case DB_DATA_TYPE_FLOAT:
+                fSqlType = pDb->GetTypeInfFloat().FsqlType;
+                precision = pDb->GetTypeInfFloat().Precision;
+                scale = pDb->GetTypeInfFloat().MaximumScale;       
+                // SQL Sybase Anywhere v5.5 returned a negative number for the
+                // MaxScale.  This caused ODBC to kick out an error on ibscale.
+                // I check for this here and set the scale = precision.
+                //if (scale < 0)
+                // scale = (short) precision;
+                if (colDefs[i].Null)
+                    colDefs[i].CbValue = SQL_NULL_DATA;
+                else
+                    colDefs[i].CbValue = 0;
+                break;
+            case DB_DATA_TYPE_DATE:
+                fSqlType = pDb->GetTypeInfDate().FsqlType;
+                precision = pDb->GetTypeInfDate().Precision;
+                scale = 0;
+                if (colDefs[i].Null)
+                    colDefs[i].CbValue = SQL_NULL_DATA;
+                else
+                    colDefs[i].CbValue = 0;
+                break;
+            case DB_DATA_TYPE_BLOB:
+                fSqlType = pDb->GetTypeInfBlob().FsqlType;
+                precision = 50000;
+                scale = 0;
+                if (colDefs[i].Null)
+                    colDefs[i].CbValue = SQL_NULL_DATA;
+                else
+                    colDefs[i].CbValue = SQL_LEN_DATA_AT_EXEC(colDefs[i].SzDataObj);
+                break;
+        }
+        if (forUpdate)
+        {
+            if (SQLBindParameter(hstmtUpdate, colNo++, SQL_PARAM_INPUT, colDefs[i].SqlCtype,
+                                 fSqlType, precision, scale, (UCHAR*) colDefs[i].PtrDataObj, 
+                                 precision+1, &colDefs[i].CbValue) != SQL_SUCCESS)
+            {
+                return(pDb->DispAllErrors(henv, hdbc, hstmtUpdate));
+            }
+        }
+        else
+        {
+            if (SQLBindParameter(hstmtInsert, colNo++, SQL_PARAM_INPUT, colDefs[i].SqlCtype,
+                                 fSqlType, precision, scale, (UCHAR*) colDefs[i].PtrDataObj, 
+                                 precision+1,&colDefs[i].CbValue) != SQL_SUCCESS)
+            {
+                return(pDb->DispAllErrors(henv, hdbc, hstmtInsert));
+            }
+        }
+    }
+    
+    // Completed successfully
+    return(TRUE);
+
+}  // wxDbTable::bindParams()
+
+
+/********** wxDbTable::bindInsertParams() **********/
+bool wxDbTable::bindInsertParams(void)
+{
+    return bindParams(FALSE);
+}  // wxDbTable::bindInsertParams()
+
+
+/********** wxDbTable::bindUpdateParams() **********/
+bool wxDbTable::bindUpdateParams(void)

 {
 {

-       assert(!queryOnly);
-       if (queryOnly)
-               return(FALSE);
-
-       SWORD   fSqlType        = 0;
-       UDWORD  precision       = 0;
-       SWORD   scale           = 0;
-
-       // Bind each column (that can be inserted) of the table to a parameter marker
-       int i;
-       for (i = 0; i < noCols; i++)
-       {
-               if (! colDefs[i].InsertAllowed)
-                       continue;
-               switch(colDefs[i].DbDataType)
-               {
-               case DB_DATA_TYPE_VARCHAR:
-                       fSqlType = pDb->typeInfVarchar.FsqlType;
-                       precision = colDefs[i].SzDataObj;
-                       scale = 0;
-                       colDefs[i].CbValue = SQL_NTS;
-                       break;
-               case DB_DATA_TYPE_INTEGER:
-                       fSqlType = pDb->typeInfInteger.FsqlType;
-                       precision = pDb->typeInfInteger.Precision;
-                       scale = 0;
-                       colDefs[i].CbValue = 0;
-                       break;
-               case DB_DATA_TYPE_FLOAT:
-                       fSqlType = pDb->typeInfFloat.FsqlType;
-                       precision = pDb->typeInfFloat.Precision;
-                       scale = pDb->typeInfFloat.MaximumScale;
-                       // SQL Sybase Anywhere v5.5 returned a negative number for the
-                       // MaxScale.  This caused ODBC to kick out an error on ibscale.
-                       // I check for this here and set the scale = precision.
-                       //if (scale < 0)
-                       //      scale = (short) precision;
-                       colDefs[i].CbValue = 0;
-                       break;
-               case DB_DATA_TYPE_DATE:
-                       fSqlType = pDb->typeInfDate.FsqlType;
-                       precision = pDb->typeInfDate.Precision;
-                       scale = 0;
-                       colDefs[i].CbValue = 0;
-                       break;
-               }
-               // Null values
-               if (colDefs[i].Null)
-               {
-                       colDefs[i].CbValue = SQL_NULL_DATA;
-                       colDefs[i].Null = FALSE;
-               }
-               if (SQLBindParameter(hstmtInsert, i+1, SQL_PARAM_INPUT, colDefs[i].SqlCtype,
-                                                                       fSqlType, precision, scale, (UCHAR*) colDefs[i].PtrDataObj, 
-                                                                       precision+1,&colDefs[i].CbValue) != SQL_SUCCESS)
-                       return(pDb->DispAllErrors(henv, hdbc, hstmtInsert));
-       }
-
-       // Completed successfully
-       return(TRUE);
-
-}  // wxTable::bindInsertParams()
-
-/********** wxTable::bindUpdateParams() **********/
-bool wxTable::bindUpdateParams(void)
+    return bindParams(TRUE);
+}  // wxDbTable::bindUpdateParams()
+
+
+/********** wxDbTable::bindCols() **********/
+bool wxDbTable::bindCols(HSTMT cursor)

 {
 {

-       assert(!queryOnly);
-       if (queryOnly)
-               return(FALSE);
-
-       SWORD   fSqlType        = 0;
-       UDWORD  precision       = 0;
-       SWORD   scale           = 0;
-       
-       // Bind each UPDATEABLE column of the table to a parameter marker
-       int i,colNo;
-       for (i = 0, colNo = 1; i < noCols; i++)
-       {
-               if (! colDefs[i].Updateable)
-                       continue;
-               switch(colDefs[i].DbDataType)
-               {
-               case DB_DATA_TYPE_VARCHAR:
-                       fSqlType = pDb->typeInfVarchar.FsqlType;
-                       precision = colDefs[i].SzDataObj;
-                       scale = 0;
-                       colDefs[i].CbValue = SQL_NTS;
-                       break;
-               case DB_DATA_TYPE_INTEGER:
-                       fSqlType = pDb->typeInfInteger.FsqlType;
-                       precision = pDb->typeInfInteger.Precision;
-                       scale = 0;
-                       colDefs[i].CbValue = 0;
-                       break;
-               case DB_DATA_TYPE_FLOAT:
-                       fSqlType = pDb->typeInfFloat.FsqlType;
-                       precision = pDb->typeInfFloat.Precision;
-                       scale = pDb->typeInfFloat.MaximumScale;
-                       // SQL Sybase Anywhere v5.5 returned a negative number for the
-                       // MaxScale.  This caused ODBC to kick out an error on ibscale.
-                       // I check for this here and set the scale = precision.
-                       //if (scale < 0)
-                       // scale = (short) precision;
-                       colDefs[i].CbValue = 0;
-                       break;
-               case DB_DATA_TYPE_DATE:
-                       fSqlType = pDb->typeInfDate.FsqlType;
-                       precision = pDb->typeInfDate.Precision;
-                       scale = 0;
-                       colDefs[i].CbValue = 0;
-                       break;
-               }
-               if (SQLBindParameter(hstmtUpdate, colNo++, SQL_PARAM_INPUT, colDefs[i].SqlCtype,
-                                                                       fSqlType, precision, scale, (UCHAR*) colDefs[i].PtrDataObj, 
-                                                                       precision+1, &colDefs[i].CbValue) != SQL_SUCCESS)
-                       return(pDb->DispAllErrors(henv, hdbc, hstmtUpdate));
-       }
-
-       // Completed successfully
-       return(TRUE);
-
-}  // wxTable::bindUpdateParams()
-
-/********** wxTable::bindCols() **********/
-bool wxTable::bindCols(HSTMT cursor)
+    // Bind each column of the table to a memory address for fetching data
+    UWORD i;
+    for (i = 0; i < noCols; i++)
+    {
+        if (SQLBindCol(cursor, (UWORD)(i+1), colDefs[i].SqlCtype, (UCHAR*) colDefs[i].PtrDataObj,
+                       colDefs[i].SzDataObj, &colDefs[i].CbValue ) != SQL_SUCCESS)
+        {
+          return (pDb->DispAllErrors(henv, hdbc, cursor));
+        }
+    }
+
+    // Completed successfully
+    return(TRUE);
+
+}  // wxDbTable::bindCols()
+
+
+/********** wxDbTable::getRec() **********/
+bool wxDbTable::getRec(UWORD fetchType)

 {
 {

-       static SDWORD  cb;
-       
-       // Bind each column of the table to a memory address for fetching data
-       int i;
-       for (i = 0; i < noCols; i++)
-       {
-               if (SQLBindCol(cursor, i+1, colDefs[i].SqlCtype, (UCHAR*) colDefs[i].PtrDataObj,
-                                                       colDefs[i].SzDataObj, &cb) != SQL_SUCCESS)
-                       return(pDb->DispAllErrors(henv, hdbc, cursor));
-       }
-
-       // Completed successfully
-       return(TRUE);
-
-}  // wxTable::bindCols()
-
-/********** wxTable::getRec() **********/
-bool wxTable::getRec(UWORD fetchType)
+    RETCODE retcode;
+
+    if (!pDb->FwdOnlyCursors())
+    {
+        // Fetch the NEXT, PREV, FIRST or LAST record, depending on fetchType
+        UDWORD  cRowsFetched;
+        UWORD   rowStatus;
+
+        retcode = SQLExtendedFetch(hstmt, fetchType, 0, &cRowsFetched, &rowStatus);
+        if (retcode != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO)
+        {
+            if (retcode == SQL_NO_DATA_FOUND)
+                return(FALSE);
+            else
+                return(pDb->DispAllErrors(henv, hdbc, hstmt));
+        }
+        else
+        {
+            // Set the Null member variable to indicate the Null state
+            // of each column just read in.
+            int i;
+            for (i = 0; i < noCols; i++)
+                colDefs[i].Null = (colDefs[i].CbValue == SQL_NULL_DATA);
+        }
+    }
+    else
+    {
+        // Fetch the next record from the record set
+        retcode = SQLFetch(hstmt);
+        if (retcode != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO)
+        {
+            if (retcode == SQL_NO_DATA_FOUND)
+                return(FALSE);
+            else
+                return(pDb->DispAllErrors(henv, hdbc, hstmt));
+        }
+        else
+        {
+            // Set the Null member variable to indicate the Null state
+            // of each column just read in.
+            int i;
+            for (i = 0; i < noCols; i++)
+                colDefs[i].Null = (colDefs[i].CbValue == SQL_NULL_DATA);
+        }
+    }
+
+    // Completed successfully
+    return(TRUE);
+
+}  // wxDbTable::getRec()
+
+
+/********** wxDbTable::execDelete() **********/
+bool wxDbTable::execDelete(const wxString &pSqlStmt)

 {
 {

-       RETCODE retcode;
+    RETCODE retcode;

 
 

-#if !wxODBC_FWD_ONLY_CURSORS
+    // Execute the DELETE statement
+    retcode = SQLExecDirect(hstmtDelete, (UCHAR FAR *) pSqlStmt.c_str(), SQL_NTS);

 
 

-       // Fetch the NEXT, PREV, FIRST or LAST record, depending on fetchType
-       UDWORD  cRowsFetched;
-       UWORD   rowStatus;
+    if (retcode == SQL_SUCCESS ||
+        retcode == SQL_NO_DATA_FOUND ||
+        retcode == SQL_SUCCESS_WITH_INFO)
+    {
+        // Record deleted successfully
+        return(TRUE);
+    }

 
 

-//     if ((retcode = SQLExtendedFetch(hstmt, fetchType, 0, &cRowsFetched, &rowStatus)) != SQL_SUCCESS)
-   retcode = SQLExtendedFetch(hstmt, fetchType, 0, &cRowsFetched, &rowStatus);
-   if (retcode  != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO)
-               if (retcode == SQL_NO_DATA_FOUND)
-                       return(FALSE);
-               else
-                       return(pDb->DispAllErrors(henv, hdbc, hstmt));
-#else
+    // Problem deleting record
+    return(pDb->DispAllErrors(henv, hdbc, hstmtDelete));

 
 

-       // Fetch the next record from the record set
-       retcode = SQLFetch(hstmt);
-       if (retcode != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO)
-       {
-               if (retcode == SQL_NO_DATA_FOUND)
-                       return(FALSE);
-               else
-                       return(pDb->DispAllErrors(henv, hdbc, hstmt));
-       }
-#endif
+}  // wxDbTable::execDelete()

 
 

-       // Completed successfully
-       return(TRUE);

 
 

-}  // wxTable::getRec()
+/********** wxDbTable::execUpdate() **********/
+bool wxDbTable::execUpdate(const wxString &pSqlStmt)
+{
+    RETCODE retcode;
+
+    // Execute the UPDATE statement
+    retcode = SQLExecDirect(hstmtUpdate, (UCHAR FAR *) pSqlStmt.c_str(), SQL_NTS);
+
+    if (retcode == SQL_SUCCESS ||
+        retcode == SQL_NO_DATA_FOUND ||
+        retcode == SQL_SUCCESS_WITH_INFO)
+    {
+        // Record updated successfully
+        return(TRUE);
+    }
+
+    // Problem updating record
+    return(pDb->DispAllErrors(henv, hdbc, hstmtUpdate));
+
+}  // wxDbTable::execUpdate()

 
 

-/********** wxTable::execDelete() **********/
-bool wxTable::execDelete(const char *pSqlStmt)
+
+/********** wxDbTable::query() **********/
+bool wxDbTable::query(int queryType, bool forUpdate, bool distinct, const wxString &pSqlStmt)

 {
 {

-       // Execute the DELETE statement
-       if (SQLExecDirect(hstmtDelete, (UCHAR FAR *) pSqlStmt, SQL_NTS) != SQL_SUCCESS)
-               return(pDb->DispAllErrors(henv, hdbc, hstmtDelete));
+    wxString sqlStmt;
+
+    if (forUpdate)
+        // The user may wish to select for update, but the DBMS may not be capable
+        selectForUpdate = CanSelectForUpdate();
+    else
+        selectForUpdate = FALSE;
+
+    // Set the SQL SELECT string
+    if (queryType != DB_SELECT_STATEMENT)               // A select statement was not passed in,
+    {                                                   // so generate a select statement.
+        BuildSelectStmt(sqlStmt, queryType, distinct);
+        pDb->WriteSqlLog(sqlStmt);
+    }
+
+    // Make sure the cursor is closed first
+    if (!CloseCursor(hstmt))
+        return(FALSE);

 
 

-       // Record deleted successfully
-       return(TRUE);
+    // Execute the SQL SELECT statement
+    int retcode;     
+    retcode = SQLExecDirect(hstmt, (UCHAR FAR *) (queryType == DB_SELECT_STATEMENT ? pSqlStmt.c_str() : sqlStmt.c_str()), SQL_NTS);
+    if (retcode != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO)
+        return(pDb->DispAllErrors(henv, hdbc, hstmt));

 
 

-}  // wxTable::execDelete()
+    // Completed successfully
+    return(TRUE);

 
 

-/********** wxTable::execUpdate() **********/
-bool wxTable::execUpdate(const char *pSqlStmt)
+}  // wxDbTable::query()
+
+
+/***************************** PUBLIC FUNCTIONS *****************************/
+
+
+/********** wxDbTable::Open() **********/
+bool wxDbTable::Open(bool checkPrivileges, bool checkTableExists)
+{
+    if (!pDb)
+        return FALSE;   
+
+    int i;
+    wxString sqlStmt;
+    wxString s;
+
+    s.Empty();
+    // Verify that the table exists in the database
+    if (checkTableExists && !pDb->TableExists(tableName, pDb->GetUsername(), tablePath))
+    {
+        s = wxT("Table/view does not exist in the database");
+        if ( *(pDb->dbInf.accessibleTables) == wxT('Y'))
+            s += wxT(", or you have no permissions.\n");
+        else
+            s += wxT(".\n");
+    }
+    else if (checkPrivileges)
+    {
+        // Verify the user has rights to access the table.
+        // Shortcut boolean evaluation to optimize out call to 
+        // TablePrivileges
+        //
+        // Unfortunately this optimization doesn't seem to be
+        // reliable!
+        if (// *(pDb->dbInf.accessibleTables) == 'N' && 
+            !pDb->TablePrivileges(tableName,wxT("SELECT"), pDb->GetUsername(), pDb->GetUsername(), tablePath))
+            s = wxT("Current logged in user does not have sufficient privileges to access this table.\n");
+    }
+
+    if (!s.IsEmpty())
+    {
+        wxString p;
+
+        if (!tablePath.IsEmpty())
+            p.Printf(wxT("Error opening '%s/%s'.\n"),tablePath.c_str(),tableName.c_str());
+        else
+            p.Printf(wxT("Error opening '%s'.\n"), tableName.c_str());
+
+        p += s;
+        pDb->LogError(p.GetData());
+
+        return(FALSE);
+    }
+
+    // Bind the member variables for field exchange between
+    // the wxDbTable object and the ODBC record.
+    if (!queryOnly)
+    {
+        if (!bindInsertParams())                    // Inserts
+            return(FALSE);
+       
+        if (!bindUpdateParams())                    // Updates
+            return(FALSE);
+    }
+
+    if (!bindCols(*hstmtDefault))                   // Selects
+        return(FALSE);
+    
+    if (!bindCols(hstmtInternal))                   // Internal use only
+        return(FALSE);
+
+     /*
+     * Do NOT bind the hstmtCount cursor!!!
+     */
+
+    // Build an insert statement using parameter markers
+    if (!queryOnly && noCols > 0)
+    {
+        bool needComma = FALSE;
+        sqlStmt.Printf(wxT("INSERT INTO %s ("), tableName.c_str());
+        for (i = 0; i < noCols; i++)
+        {
+            if (! colDefs[i].InsertAllowed)
+                continue;
+            if (needComma)
+                sqlStmt += wxT(",");
+            sqlStmt += colDefs[i].ColName;
+            needComma = TRUE;
+        }
+        needComma = FALSE;
+        sqlStmt += wxT(") VALUES (");
+
+        int insertableCount = 0;
+
+        for (i = 0; i < noCols; i++)
+        {
+            if (! colDefs[i].InsertAllowed)
+                continue;
+            if (needComma)
+                sqlStmt += wxT(",");
+            sqlStmt += wxT("?");
+            needComma = TRUE;
+            insertableCount++;
+        }
+        sqlStmt += wxT(")");
+        
+        // Prepare the insert statement for execution
+        if (insertableCount)  
+        {
+            if (SQLPrepare(hstmtInsert, (UCHAR FAR *) sqlStmt.c_str(), SQL_NTS) != SQL_SUCCESS)
+                return(pDb->DispAllErrors(henv, hdbc, hstmtInsert));
+        }
+        else 
+            insertable= FALSE;
+    }
+    
+    // Completed successfully
+    return(TRUE);
+
+}  // wxDbTable::Open()
+
+
+/********** wxDbTable::Query() **********/
+bool wxDbTable::Query(bool forUpdate, bool distinct)
+{
+
+    return(query(DB_SELECT_WHERE, forUpdate, distinct));
+
+}  // wxDbTable::Query()
+
+
+/********** wxDbTable::QueryBySqlStmt() **********/
+bool wxDbTable::QueryBySqlStmt(const wxString &pSqlStmt)

 {
 {

-       // Execute the UPDATE statement
-       if (SQLExecDirect(hstmtUpdate, (UCHAR FAR *) pSqlStmt, SQL_NTS) != SQL_SUCCESS)
-               return(pDb->DispAllErrors(henv, hdbc, hstmtUpdate));
+    pDb->WriteSqlLog(pSqlStmt);
+
+    return(query(DB_SELECT_STATEMENT, FALSE, FALSE, pSqlStmt));

 
 

-       // Record deleted successfully
-       return(TRUE);
+}  // wxDbTable::QueryBySqlStmt()

 
 

-}  // wxTable::execUpdate()

 
 

-/********** wxTable::query() **********/
-bool wxTable::query(int queryType, bool forUpdate, bool distinct, char *pSqlStmt)
+/********** wxDbTable::QueryMatching() **********/
+bool wxDbTable::QueryMatching(bool forUpdate, bool distinct)

 {
 {

-       char sqlStmt[DB_MAX_STATEMENT_LEN];

 
 

-       // Set the selectForUpdate member variable
-       if (forUpdate)
-               // The user may wish to select for update, but the DBMS may not be capable
-               selectForUpdate = CanSelectForUpdate();
-       else
-               selectForUpdate = FALSE;
+    return(query(DB_SELECT_MATCHING, forUpdate, distinct));

 
 

-       // Set the SQL SELECT string
-       if (queryType != DB_SELECT_STATEMENT)                           // A select statement was not passed in,
-       {                                                                                                                               // so generate a select statement.
-               GetSelectStmt(sqlStmt, queryType, distinct);
-               pDb->WriteSqlLog(sqlStmt);
-       }
+}  // wxDbTable::QueryMatching()

 
 

-       // Make sure the cursor is closed first
-       if (! CloseCursor(hstmt))
-               return(FALSE);

 
 

-       // Execute the SQL SELECT statement
-       int retcode;
+/********** wxDbTable::QueryOnKeyFields() **********/
+bool wxDbTable::QueryOnKeyFields(bool forUpdate, bool distinct)
+{

 
 

-       retcode = SQLExecDirect(hstmt, (UCHAR FAR *) (queryType == DB_SELECT_STATEMENT ? pSqlStmt : sqlStmt), SQL_NTS);
-       if (retcode != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO)
-               return(pDb->DispAllErrors(henv, hdbc, hstmt));
+    return(query(DB_SELECT_KEYFIELDS, forUpdate, distinct));

 
 

-       // Completed successfully
-       return(TRUE);
+}  // wxDbTable::QueryOnKeyFields()

 
 

-}  // wxTable::query()

 
 

+/********** wxDbTable::GetPrev() **********/
+bool wxDbTable::GetPrev(void)
+{
+    if (pDb->FwdOnlyCursors())
+    {
+        wxFAIL_MSG(wxT("GetPrev()::Backward scrolling cursors are not enabled for this instance of wxDbTable"));
+        return FALSE;
+    }
+    else
+        return(getRec(SQL_FETCH_PRIOR));
+
+}  // wxDbTable::GetPrev()

 
 
 
 

-/********** wxTable::Open() **********/
-bool wxTable::Open(void)
+/********** wxDbTable::operator-- **********/
+bool wxDbTable::operator--(int)

 {
 {

-       if (!pDb)
-               return FALSE;
-
-       int i;
-       char sqlStmt[DB_MAX_STATEMENT_LEN];
-
-       // Verify that the table exists in the database
-       if (!pDb->TableExists(tableName,NULL,tablePath))
-       {
-               char s[128];
-               sprintf(s, "Error opening '%s', table/view does not exist in the database.", tableName);
-               pDb->LogError(s);
-               return(FALSE);
-       }
-
-       // Bind the member variables for field exchange between
-       // the wxTable object and the ODBC record.
-       if (!queryOnly)
-       {
-               if (!bindInsertParams())                                        // Inserts
-                       return(FALSE);
-               if (!bindUpdateParams())                                        // Updates
-                       return(FALSE);
-       }
-       if (!bindCols(*hstmtDefault))                                   // Selects
-               return(FALSE);
-       if (!bindCols(hstmtInternal))                                   // Internal use only
-               return(FALSE);
-       /*
-        * Do NOT bind the hstmtCount cursor!!!
-        */
-
-       // Build an insert statement using parameter markers
-       if (!queryOnly && noCols > 0)
-       {
-               bool needComma = FALSE;
-               sprintf(sqlStmt, "INSERT INTO %s (", tableName);
-               for (i = 0; i < noCols; i++)
-               {
-                       if (! colDefs[i].InsertAllowed)
-                               continue;
-                       if (needComma)
-                               wxStrcat(sqlStmt, ",");
-                       wxStrcat(sqlStmt, colDefs[i].ColName);
-                       needComma = TRUE;
-               }
-               needComma = FALSE;
-               wxStrcat(sqlStmt, ") VALUES (");
-               for (i = 0; i < noCols; i++)
-               {
-                       if (! colDefs[i].InsertAllowed)
-                               continue;
-                       if (needComma)
-                               wxStrcat(sqlStmt, ",");
-                       wxStrcat(sqlStmt, "?");
-                       needComma = TRUE;
-               }
-               wxStrcat(sqlStmt, ")");
-
-//             pDb->WriteSqlLog(sqlStmt);
-
-               // Prepare the insert statement for execution
-               if (SQLPrepare(hstmtInsert, (UCHAR FAR *) sqlStmt, SQL_NTS) != SQL_SUCCESS)
-                       return(pDb->DispAllErrors(henv, hdbc, hstmtInsert));
-       }
-       
-       // Completed successfully
-       return(TRUE);
-
-}  // wxTable::Open()
-
-/********** wxTable::Query() **********/
-bool wxTable::Query(bool forUpdate, bool distinct)
+    if (pDb->FwdOnlyCursors())
+    {
+        wxFAIL_MSG(wxT("operator--:Backward scrolling cursors are not enabled for this instance of wxDbTable"));
+        return FALSE;
+    }
+    else
+        return(getRec(SQL_FETCH_PRIOR));
+
+}  // wxDbTable::operator--
+
+
+/********** wxDbTable::GetFirst() **********/
+bool wxDbTable::GetFirst(void)

 {
 {

+    if (pDb->FwdOnlyCursors())
+    {
+        wxFAIL_MSG(wxT("GetFirst():Backward scrolling cursors are not enabled for this instance of wxDbTable"));
+        return FALSE;
+    }
+    else
+        return(getRec(SQL_FETCH_FIRST));

 
 

-       return(query(DB_SELECT_WHERE, forUpdate, distinct));
+}  // wxDbTable::GetFirst()

 
 

-}  // wxTable::Query()

 
 

-/********** wxTable::QueryBySqlStmt() **********/
-bool wxTable::QueryBySqlStmt(char *pSqlStmt)
+/********** wxDbTable::GetLast() **********/
+bool wxDbTable::GetLast(void)

 {
 {

-       pDb->WriteSqlLog(pSqlStmt);
+    if (pDb->FwdOnlyCursors())
+    {
+        wxFAIL_MSG(wxT("GetLast()::Backward scrolling cursors are not enabled for this instance of wxDbTable"));
+        return FALSE;
+    }
+    else 
+        return(getRec(SQL_FETCH_LAST));
+
+}  // wxDbTable::GetLast()

 
 

-       return(query(DB_SELECT_STATEMENT, FALSE, FALSE, pSqlStmt));

 
 

-}  // wxTable::QueryBySqlStmt()
+/********** wxDbTable::BuildDeleteStmt() **********/
+void wxDbTable::BuildDeleteStmt(wxString &pSqlStmt, int typeOfDel, const wxString &pWhereClause)
+{
+    wxASSERT(!queryOnly);
+    if (queryOnly)
+        return;
+
+    wxString whereClause;
+
+    whereClause.Empty();
+
+    // Handle the case of DeleteWhere() and the where clause is blank.  It should
+    // delete all records from the database in this case.
+    if (typeOfDel == DB_DEL_WHERE && (pWhereClause.Length() == 0))
+    {
+        pSqlStmt.Printf(wxT("DELETE FROM %s"), tableName.c_str());
+        return;
+    }
+
+    pSqlStmt.Printf(wxT("DELETE FROM %s WHERE "), tableName.c_str());
+
+    // Append the WHERE clause to the SQL DELETE statement
+    switch(typeOfDel)
+    {
+        case DB_DEL_KEYFIELDS:
+            // If the datasource supports the ROWID column, build
+            // the where on ROWID for efficiency purposes.
+            // e.g. DELETE FROM PARTS WHERE ROWID = '111.222.333'
+            if (CanUpdByROWID())
+            {
+                SDWORD cb;
+                wxChar   rowid[wxDB_ROWID_LEN+1];
+
+                // Get the ROWID value.  If not successful retreiving the ROWID,
+                // simply fall down through the code and build the WHERE clause
+                // based on the key fields.
+                if (SQLGetData(hstmt, (UWORD)(noCols+1), SQL_C_CHAR, (UCHAR*) rowid, wxDB_ROWID_LEN, &cb) == SQL_SUCCESS)
+                {
+                    pSqlStmt += wxT("ROWID = '");
+                    pSqlStmt += rowid;
+                    pSqlStmt += wxT("'");
+                    break;
+                }
+            }
+            // Unable to delete by ROWID, so build a WHERE
+            // clause based on the keyfields.
+            BuildWhereClause(whereClause, DB_WHERE_KEYFIELDS);
+            pSqlStmt += whereClause;
+            break;
+        case DB_DEL_WHERE:
+            pSqlStmt += pWhereClause;
+            break;
+        case DB_DEL_MATCHING:
+            BuildWhereClause(whereClause, DB_WHERE_MATCHING);
+            pSqlStmt += whereClause;
+            break;
+    }
+
+}  // BuildDeleteStmt()
+
+
+/***** DEPRECATED: use wxDbTable::BuildDeleteStmt(wxString &....) form *****/
+void wxDbTable::BuildDeleteStmt(wxChar *pSqlStmt, int typeOfDel, const wxString &pWhereClause)
+{
+    wxString tempSqlStmt;
+    BuildDeleteStmt(tempSqlStmt, typeOfDel, pWhereClause);
+    wxStrcpy(pSqlStmt, tempSqlStmt);
+}  // wxDbTable::BuildDeleteStmt()
+

 
 

-/********** wxTable::QueryMatching() **********/
-bool wxTable::QueryMatching(bool forUpdate, bool distinct)
+/********** wxDbTable::BuildSelectStmt() **********/
+void wxDbTable::BuildSelectStmt(wxString &pSqlStmt, int typeOfSelect, bool distinct)

 {
 {

+    wxString whereClause;
+    whereClause.Empty();
+
+    // Build a select statement to query the database
+    pSqlStmt = wxT("SELECT ");
+
+    // SELECT DISTINCT values only?
+    if (distinct)
+        pSqlStmt += wxT("DISTINCT ");
+
+    // Was a FROM clause specified to join tables to the base table?
+    // Available for ::Query() only!!!
+    bool appendFromClause = FALSE;
+#if wxODBC_BACKWARD_COMPATABILITY
+    if (typeOfSelect == DB_SELECT_WHERE && from && wxStrlen(from))
+        appendFromClause = TRUE;
+#else
+    if (typeOfSelect == DB_SELECT_WHERE && from.Length())
+        appendFromClause = TRUE;
+#endif
+
+    // Add the column list
+    int i;
+    for (i = 0; i < noCols; i++)
+    {
+        // If joining tables, the base table column names must be qualified to avoid ambiguity
+        if (appendFromClause || pDb->Dbms() == dbmsACCESS)
+        {
+            pSqlStmt += queryTableName;
+            pSqlStmt += wxT(".");
+        }
+        pSqlStmt += colDefs[i].ColName;
+        if (i + 1 < noCols)
+            pSqlStmt += wxT(",");
+    }
+
+    // If the datasource supports ROWID, get this column as well.  Exception: Don't retrieve
+    // the ROWID if querying distinct records.  The rowid will always be unique.
+    if (!distinct && CanUpdByROWID())
+    {
+        // If joining tables, the base table column names must be qualified to avoid ambiguity
+        if (appendFromClause || pDb->Dbms() == dbmsACCESS)
+        {
+            pSqlStmt += wxT(",");
+            pSqlStmt += queryTableName;
+            pSqlStmt += wxT(".ROWID");
+        }
+        else
+            pSqlStmt += wxT(",ROWID");
+    }
+
+    // Append the FROM tablename portion
+    pSqlStmt += wxT(" FROM ");
+    pSqlStmt += queryTableName;
+
+    // Sybase uses the HOLDLOCK keyword to lock a record during query.
+    // The HOLDLOCK keyword follows the table name in the from clause.
+    // Each table in the from clause must specify HOLDLOCK or
+    // NOHOLDLOCK (the default).  Note: The "FOR UPDATE" clause
+    // is parsed but ignored in SYBASE Transact-SQL.
+    if (selectForUpdate && (pDb->Dbms() == dbmsSYBASE_ASA || pDb->Dbms() == dbmsSYBASE_ASE))
+        pSqlStmt += wxT(" HOLDLOCK");
+
+    if (appendFromClause)
+        pSqlStmt += from;
+
+    // Append the WHERE clause.  Either append the where clause for the class
+    // or build a where clause.  The typeOfSelect determines this.
+    switch(typeOfSelect)
+    {
+        case DB_SELECT_WHERE:
+#if wxODBC_BACKWARD_COMPATABILITY
+            if (where && wxStrlen(where))   // May not want a where clause!!!
+#else
+            if (where.Length())   // May not want a where clause!!!
+#endif
+            {
+                pSqlStmt += wxT(" WHERE ");
+                pSqlStmt += where;
+            }
+            break;
+        case DB_SELECT_KEYFIELDS:
+            BuildWhereClause(whereClause, DB_WHERE_KEYFIELDS);
+            if (whereClause.Length())
+            {
+                pSqlStmt += wxT(" WHERE ");
+                pSqlStmt += whereClause;
+            }
+            break;
+        case DB_SELECT_MATCHING:
+            BuildWhereClause(whereClause, DB_WHERE_MATCHING);
+            if (whereClause.Length())
+            {
+                pSqlStmt += wxT(" WHERE ");
+                pSqlStmt += whereClause;
+            }
+            break;
+    }
+
+    // Append the ORDER BY clause
+#if wxODBC_BACKWARD_COMPATABILITY
+    if (orderBy && wxStrlen(orderBy))
+#else
+    if (orderBy.Length())
+#endif
+    {
+        pSqlStmt += wxT(" ORDER BY ");
+        pSqlStmt += orderBy;
+    }

 
 

-       return(query(DB_SELECT_MATCHING, forUpdate, distinct));
+    // SELECT FOR UPDATE if told to do so and the datasource is capable.  Sybase
+    // parses the FOR UPDATE clause but ignores it.  See the comment above on the
+    // HOLDLOCK for Sybase.
+    if (selectForUpdate && CanSelectForUpdate())
+        pSqlStmt += wxT(" FOR UPDATE");

 
 

-}  // wxTable::QueryMatching()
+}  // wxDbTable::BuildSelectStmt()

 
 

-/********** wxTable::QueryOnKeyFields() **********/
-bool wxTable::QueryOnKeyFields(bool forUpdate, bool distinct)
+
+/***** DEPRECATED: use wxDbTable::BuildSelectStmt(wxString &....) form *****/
+void wxDbTable::BuildSelectStmt(wxChar *pSqlStmt, int typeOfSelect, bool distinct)

 {
 {

+    wxString tempSqlStmt;
+    BuildSelectStmt(tempSqlStmt, typeOfSelect, distinct);
+    wxStrcpy(pSqlStmt, tempSqlStmt);
+}  // wxDbTable::BuildSelectStmt()

 
 

-       return(query(DB_SELECT_KEYFIELDS, forUpdate, distinct));

 
 

-}  // wxTable::QueryOnKeyFields()
+/********** wxDbTable::BuildUpdateStmt() **********/
+void wxDbTable::BuildUpdateStmt(wxString &pSqlStmt, int typeOfUpd, const wxString &pWhereClause)
+{
+    wxASSERT(!queryOnly);
+    if (queryOnly)
+        return;
+
+    wxString whereClause;
+    whereClause.Empty();
+
+    bool firstColumn = TRUE;
+
+    pSqlStmt.Printf(wxT("UPDATE %s SET "), tableName.Upper().c_str());
+
+    // Append a list of columns to be updated
+    int i;
+    for (i = 0; i < noCols; i++)
+    {
+        // Only append Updateable columns
+        if (colDefs[i].Updateable)
+        {
+            if (!firstColumn)
+                pSqlStmt += wxT(",");
+            else
+                firstColumn = FALSE;
+            pSqlStmt += colDefs[i].ColName;
+            pSqlStmt += wxT(" = ?");
+        }
+    }
+
+    // Append the WHERE clause to the SQL UPDATE statement
+    pSqlStmt += wxT(" WHERE ");
+    switch(typeOfUpd)
+    {
+        case DB_UPD_KEYFIELDS:
+            // If the datasource supports the ROWID column, build
+            // the where on ROWID for efficiency purposes.
+            // e.g. UPDATE PARTS SET Col1 = ?, Col2 = ? WHERE ROWID = '111.222.333'
+            if (CanUpdByROWID())
+            {
+                SDWORD cb;
+                wxChar rowid[wxDB_ROWID_LEN+1];
+
+                // Get the ROWID value.  If not successful retreiving the ROWID,
+                // simply fall down through the code and build the WHERE clause
+                // based on the key fields.
+                if (SQLGetData(hstmt, (UWORD)(noCols+1), SQL_C_CHAR, (UCHAR*) rowid, wxDB_ROWID_LEN, &cb) == SQL_SUCCESS)
+                {
+                    pSqlStmt += wxT("ROWID = '");
+                    pSqlStmt += rowid;
+                    pSqlStmt += wxT("'");
+                    break;
+                }
+            }
+            // Unable to delete by ROWID, so build a WHERE
+            // clause based on the keyfields.
+            BuildWhereClause(whereClause, DB_WHERE_KEYFIELDS);
+            pSqlStmt += whereClause;
+            break;
+        case DB_UPD_WHERE:
+            pSqlStmt += pWhereClause;
+            break;
+    }
+}  // BuildUpdateStmt()
+
+
+/***** DEPRECATED: use wxDbTable::BuildUpdateStmt(wxString &....) form *****/
+void wxDbTable::BuildUpdateStmt(wxChar *pSqlStmt, int typeOfUpd, const wxString &pWhereClause)
+{
+    wxString tempSqlStmt;
+    BuildUpdateStmt(tempSqlStmt, typeOfUpd, pWhereClause);
+    wxStrcpy(pSqlStmt, tempSqlStmt);
+}  // BuildUpdateStmt()

 
 

-/********** wxTable::GetSelectStmt() **********/
-void wxTable::GetSelectStmt(char *pSqlStmt, int typeOfSelect, bool distinct)
+
+/********** wxDbTable::BuildWhereClause() **********/
+void wxDbTable::BuildWhereClause(wxString &pWhereClause, int typeOfWhere,
+                                 const wxString &qualTableName, bool useLikeComparison)
+/*
+ * Note: BuildWhereClause() currently ignores timestamp columns.
+ *       They are not included as part of the where clause.
+ */

 {
 {

-       char whereClause[DB_MAX_WHERE_CLAUSE_LEN];
-
-       whereClause[0] = 0;
-
-       // Build a select statement to query the database
-       wxStrcpy(pSqlStmt, "SELECT ");
-
-       // SELECT DISTINCT values only?
-       if (distinct)
-               wxStrcat(pSqlStmt, "DISTINCT ");
-
-       // Was a FROM clause specified to join tables to the base table?
-       // Available for ::Query() only!!!
-       bool appendFromClause = FALSE;
-       if (typeOfSelect == DB_SELECT_WHERE && from && wxStrlen(from))
-               appendFromClause = TRUE;
-
-       // Add the column list
-       int i;
-       for (i = 0; i < noCols; i++)
-       {
-               // If joining tables, the base table column names must be qualified to avoid ambiguity
-               if (appendFromClause)
-               {
-                       wxStrcat(pSqlStmt, queryTableName);
-                       wxStrcat(pSqlStmt, ".");
-               }
-               wxStrcat(pSqlStmt, colDefs[i].ColName);
-               if (i + 1 < noCols)
-                       wxStrcat(pSqlStmt, ",");
-       }
-
-       // If the datasource supports ROWID, get this column as well.  Exception: Don't retrieve
-       // the ROWID if querying distinct records.  The rowid will always be unique.
-       if (!distinct && CanUpdByROWID())
-       {
-               // If joining tables, the base table column names must be qualified to avoid ambiguity
-               if (appendFromClause)
-               {
-                       wxStrcat(pSqlStmt, ",");
-                       wxStrcat(pSqlStmt, queryTableName);
-                       wxStrcat(pSqlStmt, ".ROWID");
-               }
-               else
-                       wxStrcat(pSqlStmt, ",ROWID");
-       }
-
-       // Append the FROM tablename portion
-       wxStrcat(pSqlStmt, " FROM ");
-       wxStrcat(pSqlStmt, queryTableName);
-
-       // Sybase uses the HOLDLOCK keyword to lock a record during query.
-       // The HOLDLOCK keyword follows the table name in the from clause.
-       // Each table in the from clause must specify HOLDLOCK or
-       // NOHOLDLOCK (the default).  Note: The "FOR UPDATE" clause
-       // is parsed but ignored in SYBASE Transact-SQL.
-       if (selectForUpdate && (pDb->Dbms() == dbmsSYBASE_ASA || pDb->Dbms() == dbmsSYBASE_ASE))
-               wxStrcat(pSqlStmt, " HOLDLOCK");
-
-       if (appendFromClause)
-               wxStrcat(pSqlStmt, from);
-
-       // Append the WHERE clause.  Either append the where clause for the class
-       // or build a where clause.  The typeOfSelect determines this.
-       switch(typeOfSelect)
-       {
-       case DB_SELECT_WHERE:
-               if (where && wxStrlen(where))   // May not want a where clause!!!
-               {
-                       wxStrcat(pSqlStmt, " WHERE ");
-                       wxStrcat(pSqlStmt, where);
-               }
-               break;
-       case DB_SELECT_KEYFIELDS:
-               GetWhereClause(whereClause, DB_WHERE_KEYFIELDS);
-               if (wxStrlen(whereClause))
-               {
-                       wxStrcat(pSqlStmt, " WHERE ");
-                       wxStrcat(pSqlStmt, whereClause);
-               }
-               break;
-       case DB_SELECT_MATCHING:
-               GetWhereClause(whereClause, DB_WHERE_MATCHING);
-               if (wxStrlen(whereClause))
-               {
-                       wxStrcat(pSqlStmt, " WHERE ");
-                       wxStrcat(pSqlStmt, whereClause);
-               }
-               break;
-       }
-
-       // Append the ORDER BY clause
-       if (orderBy && wxStrlen(orderBy))
-       {
-               wxStrcat(pSqlStmt, " ORDER BY ");
-               wxStrcat(pSqlStmt, orderBy);
-       }
-
-       // SELECT FOR UPDATE if told to do so and the datasource is capable.  Sybase
-       // parses the FOR UPDATE clause but ignores it.  See the comment above on the
-       // HOLDLOCK for Sybase.
-       if (selectForUpdate && CanSelectForUpdate())
-               wxStrcat(pSqlStmt, " FOR UPDATE");
-
-}  // wxTable::GetSelectStmt()
-
-/********** wxTable::GetRowNum() **********/
-UWORD wxTable::GetRowNum(void)
+    bool moreThanOneColumn = FALSE;
+    wxString colValue;
+
+    // Loop through the columns building a where clause as you go
+    int i;
+    for (i = 0; i < noCols; i++)
+    {
+        // Determine if this column should be included in the WHERE clause
+        if ((typeOfWhere == DB_WHERE_KEYFIELDS && colDefs[i].KeyField) ||
+             (typeOfWhere == DB_WHERE_MATCHING  && (!IsColNull(i))))
+        {
+            // Skip over timestamp columns
+            if (colDefs[i].SqlCtype == SQL_C_TIMESTAMP)
+                continue;
+            // If there is more than 1 column, join them with the keyword "AND"
+            if (moreThanOneColumn)
+                pWhereClause += wxT(" AND ");
+            else
+                moreThanOneColumn = TRUE;
+            // Concatenate where phrase for the column
+            if (qualTableName.Length())
+            {
+                pWhereClause += qualTableName;
+                pWhereClause += wxT(".");
+            }
+            pWhereClause += colDefs[i].ColName;
+            if (useLikeComparison && (colDefs[i].SqlCtype == SQL_C_CHAR))
+                pWhereClause += wxT(" LIKE ");
+            else
+                pWhereClause += wxT(" = ");
+            switch(colDefs[i].SqlCtype)
+            {
+                case SQL_C_CHAR:
+                    colValue.Printf(wxT("'%s'"), (UCHAR FAR *) colDefs[i].PtrDataObj);
+                    break;
+                case SQL_C_SSHORT:
+                    colValue.Printf(wxT("%hi"), *((SWORD *) colDefs[i].PtrDataObj));
+                    break;
+                case SQL_C_USHORT:
+                    colValue.Printf(wxT("%hu"), *((UWORD *) colDefs[i].PtrDataObj));
+                    break;
+                case SQL_C_SLONG:
+                    colValue.Printf(wxT("%li"), *((SDWORD *) colDefs[i].PtrDataObj));
+                    break;
+                case SQL_C_ULONG:
+                    colValue.Printf(wxT("%lu"), *((UDWORD *) colDefs[i].PtrDataObj));
+                    break;
+                case SQL_C_FLOAT:
+                    colValue.Printf(wxT("%.6f"), *((SFLOAT *) colDefs[i].PtrDataObj));
+                    break;
+                case SQL_C_DOUBLE:
+                    colValue.Printf(wxT("%.6f"), *((SDOUBLE *) colDefs[i].PtrDataObj));
+                    break;
+            }
+            pWhereClause += colValue;
+        }
+    }
+}  // wxDbTable::BuildWhereClause()
+
+
+/***** DEPRECATED: use wxDbTable::BuildWhereClause(wxString &....) form *****/
+void wxDbTable::BuildWhereClause(wxChar *pWhereClause, int typeOfWhere,
+                                 const wxString &qualTableName, bool useLikeComparison)

 {
 {

-       UDWORD rowNum;
+    wxString tempSqlStmt;
+    BuildWhereClause(tempSqlStmt, typeOfWhere, qualTableName, useLikeComparison);
+    wxStrcpy(pWhereClause, tempSqlStmt);
+}  // wxDbTable::BuildWhereClause()

 
 

-       if (SQLGetStmtOption(hstmt, SQL_ROW_NUMBER, (UCHAR*) &rowNum) != SQL_SUCCESS)
-       {
-               pDb->DispAllErrors(henv, hdbc, hstmt);
-               return(0);
-       }

 
 

-       // Completed successfully
-       return((UWORD) rowNum);
+/********** wxDbTable::GetRowNum() **********/
+UWORD wxDbTable::GetRowNum(void)
+{
+    UDWORD rowNum;
+
+    if (SQLGetStmtOption(hstmt, SQL_ROW_NUMBER, (UCHAR*) &rowNum) != SQL_SUCCESS)
+    {
+        pDb->DispAllErrors(henv, hdbc, hstmt);
+        return(0);
+    }

 
 

-}  // wxTable::GetRowNum()
+    // Completed successfully
+    return((UWORD) rowNum);

 
 

-/********** wxTable::CloseCursor() **********/
-bool wxTable::CloseCursor(HSTMT cursor)
+}  // wxDbTable::GetRowNum()
+
+
+/********** wxDbTable::CloseCursor() **********/
+bool wxDbTable::CloseCursor(HSTMT cursor)

 {
 {

-       if (SQLFreeStmt(cursor, SQL_CLOSE) != SQL_SUCCESS)
-               return(pDb->DispAllErrors(henv, hdbc, cursor));
+    if (SQLFreeStmt(cursor, SQL_CLOSE) != SQL_SUCCESS)
+        return(pDb->DispAllErrors(henv, hdbc, cursor));
+
+    // Completed successfully
+    return(TRUE);

 
 

-       // Completed successfully
-       return(TRUE);
+}  // wxDbTable::CloseCursor()

 
 

-}  // wxTable::CloseCursor()

 
 

-/********** wxTable::CreateTable() **********/
-bool wxTable::CreateTable(bool attemptDrop)
+/********** wxDbTable::CreateTable() **********/
+bool wxDbTable::CreateTable(bool attemptDrop)

 {
 {

-       if (!pDb)
-               return FALSE;
+    if (!pDb)
+        return FALSE;

 
 

-       int i, j;
-       char sqlStmt[DB_MAX_STATEMENT_LEN];
+    int i, j;
+    wxString sqlStmt;

 
 #ifdef DBDEBUG_CONSOLE
 
 #ifdef DBDEBUG_CONSOLE

-       cout << "Creating Table " << tableName << "..." << endl;
+    cout << wxT("Creating Table ") << tableName << wxT("...") << endl;

 #endif
 
 #endif
 

-       // Drop table first
-       if (attemptDrop && !DropTable())
-               return FALSE;
+    // Drop table first
+    if (attemptDrop && !DropTable())
+        return FALSE;

 
 

-       // Create the table
+    // Create the table

 #ifdef DBDEBUG_CONSOLE
 #ifdef DBDEBUG_CONSOLE

-       for (i = 0; i < noCols; i++)
-       {
-               // Exclude derived columns since they are NOT part of the base table
-               if (colDefs[i].DerivedCol)
-                       continue;
-               cout << i + 1 << ": " << colDefs[i].ColName << "; ";
-               switch(colDefs[i].DbDataType)
-               {
-                       case DB_DATA_TYPE_VARCHAR:
-                               cout << pDb->typeInfVarchar.TypeName << "(" << colDefs[i].SzDataObj << ")";
-                               break;
-                       case DB_DATA_TYPE_INTEGER:
-                               cout << pDb->typeInfInteger.TypeName;
-                               break;
-                       case DB_DATA_TYPE_FLOAT:
-                               cout << pDb->typeInfFloat.TypeName;
-                               break;
-                       case DB_DATA_TYPE_DATE:
-                               cout << pDb->typeInfDate.TypeName;
-                               break;
-               }
-               cout << endl;
-       }
+    for (i = 0; i < noCols; i++)
+    {
+        // Exclude derived columns since they are NOT part of the base table
+        if (colDefs[i].DerivedCol)
+            continue;
+        cout << i + 1 << wxT(": ") << colDefs[i].ColName << wxT("; ");
+        switch(colDefs[i].DbDataType)
+        {
+            case DB_DATA_TYPE_VARCHAR:
+                cout << pDb->typeInfVarchar.TypeName << wxT("(") << colDefs[i].SzDataObj << wxT(")");
+                break;
+            case DB_DATA_TYPE_INTEGER:
+                cout << pDb->typeInfInteger.TypeName;
+                break;
+            case DB_DATA_TYPE_FLOAT:
+                cout << pDb->typeInfFloat.TypeName;
+                break;
+            case DB_DATA_TYPE_DATE:
+                cout << pDb->typeInfDate.TypeName;
+                break;
+            case DB_DATA_TYPE_BLOB:
+                cout << pDb->typeInfBlob.TypeName;
+                break;
+        }
+        cout << endl;
+    }

 #endif
 
 #endif
 

-       // Build a CREATE TABLE string from the colDefs structure.
-       bool needComma = FALSE;
-       sprintf(sqlStmt, "CREATE TABLE %s (", tableName);
-       for (i = 0; i < noCols; i++)
-       {
-               // Exclude derived columns since they are NOT part of the base table
-               if (colDefs[i].DerivedCol)
-                       continue;
-               // Comma Delimiter
-               if (needComma)
-                  wxStrcat(sqlStmt, ",");
-               // Column Name
-               wxStrcat(sqlStmt, colDefs[i].ColName);
-               wxStrcat(sqlStmt, " ");
-               // Column Type
-               switch(colDefs[i].DbDataType)
-               {
-                       case DB_DATA_TYPE_VARCHAR:
-                               wxStrcat(sqlStmt, pDb->typeInfVarchar.TypeName); break;
-                       case DB_DATA_TYPE_INTEGER:
-                               wxStrcat(sqlStmt, pDb->typeInfInteger.TypeName); break;
-                       case DB_DATA_TYPE_FLOAT:
-                               wxStrcat(sqlStmt, pDb->typeInfFloat.TypeName); break;
-                       case DB_DATA_TYPE_DATE:
-                               wxStrcat(sqlStmt, pDb->typeInfDate.TypeName); break;
-               }
-               // For varchars, append the size of the string
-               if (colDefs[i].DbDataType == DB_DATA_TYPE_VARCHAR)
-               {
-                       char s[10];
-                       // wxStrcat(sqlStmt, "(");
-                       // wxStrcat(sqlStmt, itoa(colDefs[i].SzDataObj, s, 10));
-                       // wxStrcat(sqlStmt, ")");
-                       sprintf(s, "(%d)", colDefs[i].SzDataObj);
-                       wxStrcat(sqlStmt, s);
-               }
-
-               if (pDb->Dbms() == dbmsSYBASE_ASE || pDb->Dbms() == dbmsMY_SQL)
-               {
-                       if (colDefs[i].KeyField)
-                       {
-                               wxStrcat(sqlStmt, " NOT NULL");
-                       }
-               }
-               
-               needComma = TRUE;
-       }
-       // If there is a primary key defined, include it in the create statement
-       for (i = j = 0; i < noCols; i++)
-       {
-               if (colDefs[i].KeyField)
-               {
-                       j++;
-                       break;
-               }
-       }
-       if (j && pDb->Dbms() != dbmsDBASE)      // Found a keyfield
-       {
-               if (pDb->Dbms() != dbmsMY_SQL)
-               {
-                       wxStrcat(sqlStmt, ",CONSTRAINT ");
-                       wxStrcat(sqlStmt, tableName);
-                       wxStrcat(sqlStmt, "_PIDX PRIMARY KEY (");
-               }
-               else
-               {
-                       /* MySQL goes out on this one. We also declare the relevant key NON NULL above */
-                       wxStrcat(sqlStmt, ", PRIMARY KEY (");
-               }
-
-               // List column name(s) of column(s) comprising the primary key
-               for (i = j = 0; i < noCols; i++)
-               {
-                       if (colDefs[i].KeyField)
-                       {
-                               if (j++) // Multi part key, comma separate names
-                                       wxStrcat(sqlStmt, ",");
-                               wxStrcat(sqlStmt, colDefs[i].ColName);
-                       }
-               }
-          wxStrcat(sqlStmt, ")");
-       }
-       // Append the closing parentheses for the create table statement
-   wxStrcat(sqlStmt, ")");
-
-       pDb->WriteSqlLog(sqlStmt);
+    // Build a CREATE TABLE string from the colDefs structure.
+    bool needComma = FALSE;
+    sqlStmt.Printf(wxT("CREATE TABLE %s ("), tableName.c_str());
+
+    for (i = 0; i < noCols; i++)
+    {
+        // Exclude derived columns since they are NOT part of the base table
+        if (colDefs[i].DerivedCol)
+            continue;
+        // Comma Delimiter
+        if (needComma)
+            sqlStmt += wxT(",");
+        // Column Name
+        sqlStmt += colDefs[i].ColName;
+        sqlStmt += wxT(" ");
+        // Column Type
+        switch(colDefs[i].DbDataType)
+        {
+            case DB_DATA_TYPE_VARCHAR:
+                sqlStmt += pDb->GetTypeInfVarchar().TypeName;
+                break;
+            case DB_DATA_TYPE_INTEGER:
+                sqlStmt += pDb->GetTypeInfInteger().TypeName;
+                break;
+            case DB_DATA_TYPE_FLOAT:
+                sqlStmt += pDb->GetTypeInfFloat().TypeName;
+                break;
+            case DB_DATA_TYPE_DATE:
+                sqlStmt += pDb->GetTypeInfDate().TypeName;
+                break;
+            case DB_DATA_TYPE_BLOB:
+                sqlStmt += pDb->GetTypeInfBlob().TypeName;
+                break;
+        }
+        // For varchars, append the size of the string
+        if (colDefs[i].DbDataType == DB_DATA_TYPE_VARCHAR)// ||
+//            colDefs[i].DbDataType == DB_DATA_TYPE_BLOB)
+        {
+            wxString s;
+            s.Printf(wxT("(%d)"), colDefs[i].SzDataObj);
+            sqlStmt += s;
+        }
+
+        if (pDb->Dbms() == dbmsDB2 ||
+            pDb->Dbms() == dbmsMY_SQL ||
+            pDb->Dbms() == dbmsSYBASE_ASE  ||
+            pDb->Dbms() == dbmsINTERBASE  ||
+            pDb->Dbms() == dbmsMS_SQL_SERVER)
+        {
+            if (colDefs[i].KeyField)
+            {
+                sqlStmt += wxT(" NOT NULL");
+            }
+        }
+        
+        needComma = TRUE;
+    }
+    // If there is a primary key defined, include it in the create statement
+    for (i = j = 0; i < noCols; i++)
+    {
+        if (colDefs[i].KeyField)
+        {
+            j++;
+            break;
+        }
+    }
+    if (j && pDb->Dbms() != dbmsDBASE)  // Found a keyfield
+    {
+        switch (pDb->Dbms())
+        {
+            case dbmsINFORMIX:
+            case dbmsSYBASE_ASA:
+            case dbmsSYBASE_ASE:
+            case dbmsMY_SQL:
+            {
+                // MySQL goes out on this one. We also declare the relevant key NON NULL above
+                sqlStmt += wxT(",PRIMARY KEY (");
+                break;
+            }
+            default:
+            {
+                sqlStmt += wxT(",CONSTRAINT ");
+                //  DB2 is limited to 18 characters for index names
+                if (pDb->Dbms() == dbmsDB2)
+                {
+                    wxASSERT_MSG((tableName && wxStrlen(tableName) <= 13), wxT("DB2 table/index names must be no longer than 13 characters in length.\n\nTruncating table name to 13 characters."));
+                    sqlStmt += tableName.substr(0, 13);
+                }
+                else
+                    sqlStmt += tableName;
+
+                sqlStmt += wxT("_PIDX PRIMARY KEY (");
+                break;
+            }
+        }
+
+        // List column name(s) of column(s) comprising the primary key
+        for (i = j = 0; i < noCols; i++)
+        {
+            if (colDefs[i].KeyField)
+            {
+                if (j++) // Multi part key, comma separate names
+                    sqlStmt += wxT(",");
+                sqlStmt += colDefs[i].ColName;
+            }
+        }
+        sqlStmt += wxT(")");
+
+        if (pDb->Dbms() == dbmsINFORMIX ||
+            pDb->Dbms() == dbmsSYBASE_ASA ||
+            pDb->Dbms() == dbmsSYBASE_ASE)
+        {
+            sqlStmt += wxT(" CONSTRAINT ");
+            sqlStmt += tableName;
+            sqlStmt += wxT("_PIDX");
+        }
+    }
+    // Append the closing parentheses for the create table statement
+    sqlStmt += wxT(")");
+
+    pDb->WriteSqlLog(sqlStmt);

 
 #ifdef DBDEBUG_CONSOLE
 
 #ifdef DBDEBUG_CONSOLE

-       cout << endl << sqlStmt << endl;
+    cout << endl << sqlStmt.c_str() << endl;

 #endif
 
 #endif
 

-       // Execute the CREATE TABLE statement
-       if (SQLExecDirect(hstmt, (UCHAR FAR *) sqlStmt, SQL_NTS) != SQL_SUCCESS)
-       {
-               pDb->DispAllErrors(henv, hdbc, hstmt);
-               pDb->RollbackTrans();
-               CloseCursor(hstmt);
-               return(FALSE);
-       }
+    // Execute the CREATE TABLE statement
+    RETCODE retcode = SQLExecDirect(hstmt, (UCHAR FAR *) sqlStmt.c_str(), SQL_NTS);
+    if (retcode != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO)
+    {
+        pDb->DispAllErrors(henv, hdbc, hstmt);
+        pDb->RollbackTrans();
+        CloseCursor(hstmt);
+        return(FALSE);
+    }

 
 

-       // Commit the transaction and close the cursor
-       if (! pDb->CommitTrans())
-               return(FALSE);
-       if (! CloseCursor(hstmt))
-               return(FALSE);
+    // Commit the transaction and close the cursor
+    if (!pDb->CommitTrans())
+        return(FALSE);
+    if (!CloseCursor(hstmt))
+        return(FALSE);

 
 

-       // Database table created successfully
-       return(TRUE);
+    // Database table created successfully
+    return(TRUE);

 
 

-} // wxTable::CreateTable()
+} // wxDbTable::CreateTable()

 
 

-/********** wxTable::DropTable() **********/
-bool wxTable::DropTable()
+
+/********** wxDbTable::DropTable() **********/
+bool wxDbTable::DropTable()

 {
 {

-       // NOTE: This function returns TRUE if the Table does not exist, but
-       //       only for identified databases.  Code will need to be added
-       //                      below for any other databases when those databases are defined
-       //       to handle this situation consistently
+    // NOTE: This function returns TRUE if the Table does not exist, but
+    //       only for identified databases.  Code will need to be added
+    //       below for any other databases when those databases are defined
+    //       to handle this situation consistently

 
 

-       char sqlStmt[DB_MAX_STATEMENT_LEN];
+    wxString sqlStmt;

 
 

-       sprintf(sqlStmt, "DROP TABLE %s", tableName);
+    sqlStmt.Printf(wxT("DROP TABLE %s"), tableName.c_str());

 
 

-       pDb->WriteSqlLog(sqlStmt);
+    pDb->WriteSqlLog(sqlStmt);

 
 #ifdef DBDEBUG_CONSOLE
 
 #ifdef DBDEBUG_CONSOLE

-       cout << endl << sqlStmt << endl;
+    cout << endl << sqlStmt.c_str() << endl;

 #endif
 
 #endif
 

-       if (SQLExecDirect(hstmt, (UCHAR FAR *) sqlStmt, SQL_NTS) != SQL_SUCCESS)
-       {
-               // Check for "Base table not found" error and ignore
-               pDb->GetNextError(henv, hdbc, hstmt);
-               if (wxStrcmp(pDb->sqlState,"S0002"))  // "Base table not found"
-               {
-                       // Check for product specific error codes
-                       if (!((pDb->Dbms() == dbmsSYBASE_ASA    && !wxStrcmp(pDb->sqlState,"42000"))     ||  // 5.x (and lower?)
-                                  (pDb->Dbms() == dbmsMY_SQL                   && !wxStrcmp(pDb->sqlState,"S1000"))     ||  // untested
-                                  (pDb->Dbms() == dbmsPOSTGRES         && !wxStrcmp(pDb->sqlState,"08S01"))))    // untested
-                       {
-                               pDb->DispNextError();
-                               pDb->DispAllErrors(henv, hdbc, hstmt);
-                               pDb->RollbackTrans();
-                               CloseCursor(hstmt);
-                               return(FALSE);
-                       }
-               }
-       }
-
-       // Commit the transaction and close the cursor
-       if (! pDb->CommitTrans())
-               return(FALSE);
-       if (! CloseCursor(hstmt))
-               return(FALSE);
-
-       return(TRUE);
-}  // wxTable::DropTable()
-
-/********** wxTable::CreateIndex() **********/
-bool wxTable::CreateIndex(const char * idxName, bool unique, int noIdxCols, CidxDef *pIdxDefs, bool attemptDrop)
+
+
+
+    RETCODE retcode = SQLExecDirect(hstmt, (UCHAR FAR *) sqlStmt.c_str(), SQL_NTS);
+    if (retcode != SQL_SUCCESS)
+    {
+        // Check for "Base table not found" error and ignore
+        pDb->GetNextError(henv, hdbc, hstmt);   
+        if (wxStrcmp(pDb->sqlState, wxT("S0002")) /*&&
+            wxStrcmp(pDb->sqlState, wxT("S1000"))*/)  // "Base table not found" 
+        {
+            // Check for product specific error codes
+            if (!((pDb->Dbms() == dbmsSYBASE_ASA    && !wxStrcmp(pDb->sqlState,wxT("42000")))   ||  // 5.x (and lower?)
+                  (pDb->Dbms() == dbmsSYBASE_ASE    && !wxStrcmp(pDb->sqlState,wxT("37000")))   ||   
+                  (pDb->Dbms() == dbmsPERVASIVE_SQL && !wxStrcmp(pDb->sqlState,wxT("S1000")))   ||  // Returns an S1000 then an S0002
+                  (pDb->Dbms() == dbmsPOSTGRES      && !wxStrcmp(pDb->sqlState,wxT("08S01")))))     
+            {
+                pDb->DispNextError();
+                pDb->DispAllErrors(henv, hdbc, hstmt);
+                pDb->RollbackTrans();
+//                CloseCursor(hstmt);
+                return(FALSE);
+            }
+        }
+    }
+
+    // Commit the transaction and close the cursor
+    if (! pDb->CommitTrans())
+        return(FALSE);
+    if (! CloseCursor(hstmt))
+        return(FALSE);
+
+    return(TRUE);
+}  // wxDbTable::DropTable()
+
+
+/********** wxDbTable::CreateIndex() **********/
+bool wxDbTable::CreateIndex(const wxString &idxName, bool unique, UWORD noIdxCols,
+                                     wxDbIdxDef *pIdxDefs, bool attemptDrop)

 {
 {

-       char sqlStmt[DB_MAX_STATEMENT_LEN];
-
-       // Drop the index first
-       if (attemptDrop && !DropIndex(idxName))
-               return (FALSE);
-
-       // Build a CREATE INDEX statement
-       wxStrcpy(sqlStmt, "CREATE ");
-       if (unique)
-               wxStrcat(sqlStmt, "UNIQUE ");
-
-       wxStrcat(sqlStmt, "INDEX ");
-       wxStrcat(sqlStmt, idxName);
-       wxStrcat(sqlStmt, " ON ");
-       wxStrcat(sqlStmt, tableName);
-       wxStrcat(sqlStmt, " (");
-
-       // Append list of columns making up index
-       int i;
-       for (i = 0; i < noIdxCols; i++)
-       {
-               wxStrcat(sqlStmt, pIdxDefs[i].ColName);
-      /* Postgres doesn't cope with ASC */
-               if (pDb->Dbms() != dbmsPOSTGRES)
-               {
-                       if (pIdxDefs[i].Ascending)
-                               wxStrcat(sqlStmt, " ASC");
-                       else
-                               wxStrcat(sqlStmt, " DESC");
-               }
-
-               if ((i + 1) < noIdxCols)
-                       wxStrcat(sqlStmt, ",");
-       }
-       
-       // Append closing parentheses
-       wxStrcat(sqlStmt, ")");
-
-       pDb->WriteSqlLog(sqlStmt);
+    wxString sqlStmt;
+
+    // Drop the index first
+    if (attemptDrop && !DropIndex(idxName))
+        return (FALSE);
+
+    // MySQL (and possibly Sybase ASE?? - gt) require that any columns which are used as portions
+    // of an index have the columns defined as "NOT NULL".  During initial table creation though,
+    // it may not be known which columns are necessarily going to be part of an index (e.g. the
+    // table was created, then months later you determine that an additional index while
+    // give better performance, so you want to add an index).
+    //
+    // The following block of code will modify the column definition to make the column be
+    // defined with the "NOT NULL" qualifier.
+    if (pDb->Dbms() == dbmsMY_SQL)
+    {
+        wxString sqlStmt;
+        int i;
+        bool ok = TRUE;
+        for (i = 0; i < noIdxCols && ok; i++)
+        {
+            int   j = 0;
+            bool  found = FALSE;
+            // Find the column definition that has the ColName that matches the
+            // index column name.  We need to do this to get the DB_DATA_TYPE of
+            // the index column, as MySQL's syntax for the ALTER column requires
+            // this information
+            while (!found && (j < this->noCols))
+            {
+                if (wxStrcmp(colDefs[j].ColName,pIdxDefs[i].ColName) == 0)
+                    found = TRUE;
+                if (!found)
+                    j++;
+            }
+            
+            if (found)
+            {
+                ok = pDb->ModifyColumn(tableName, pIdxDefs[i].ColName,
+                                        colDefs[j].DbDataType, colDefs[j].SzDataObj,
+                                        wxT("NOT NULL"));
+
+                if (!ok)
+                {
+                    wxODBC_ERRORS retcode;
+                    // Oracle returns a DB_ERR_GENERAL_ERROR if the column is already
+                    // defined to be NOT NULL, but reportedly MySQL doesn't mind.
+                    // This line is just here for debug checking of the value
+                    retcode = (wxODBC_ERRORS)pDb->DB_STATUS;
+                }
+            }
+            else
+                ok = FALSE;
+        }
+        if (ok)
+            pDb->CommitTrans();
+        else
+        {
+            pDb->RollbackTrans();
+            return(FALSE);
+        }
+    }
+    
+    // Build a CREATE INDEX statement
+    sqlStmt = wxT("CREATE ");
+    if (unique)
+        sqlStmt += wxT("UNIQUE ");
+    
+    sqlStmt += wxT("INDEX ");
+    sqlStmt += idxName;
+    sqlStmt += wxT(" ON ");
+    sqlStmt += tableName;
+    sqlStmt += wxT(" (");
+    
+    // Append list of columns making up index
+    int i;
+    for (i = 0; i < noIdxCols; i++)
+    {
+        sqlStmt += pIdxDefs[i].ColName;
+
+        // Postgres and SQL Server 7 do not support the ASC/DESC keywords for index columns
+        if (!((pDb->Dbms() == dbmsMS_SQL_SERVER) && (strncmp(pDb->dbInf.dbmsVer,"07",2)==0)) &&
+            !(pDb->Dbms() == dbmsPOSTGRES))
+        {
+            if (pIdxDefs[i].Ascending)
+                sqlStmt += wxT(" ASC");
+            else
+                sqlStmt += wxT(" DESC");
+        }
+        else
+            wxASSERT_MSG(!pIdxDefs[i].Ascending, "Datasource does not support DESCending index columns");
+
+        if ((i + 1) < noIdxCols)
+            sqlStmt += wxT(",");
+    }
+    
+    // Append closing parentheses
+    sqlStmt += wxT(")");
+
+    pDb->WriteSqlLog(sqlStmt);

 
 #ifdef DBDEBUG_CONSOLE
 
 #ifdef DBDEBUG_CONSOLE

-       cout << endl << sqlStmt << endl << endl;
+    cout << endl << sqlStmt.c_str() << endl << endl;

 #endif
 
 #endif
 

-       // Execute the CREATE INDEX statement
-       if (SQLExecDirect(hstmt, (UCHAR FAR *) sqlStmt, SQL_NTS) != SQL_SUCCESS)
-       {
-               pDb->DispAllErrors(henv, hdbc, hstmt);
-               pDb->RollbackTrans();
-               CloseCursor(hstmt);
-               return(FALSE);
-       }
+    // Execute the CREATE INDEX statement
+    if (SQLExecDirect(hstmt, (UCHAR FAR *) sqlStmt.c_str(), SQL_NTS) != SQL_SUCCESS)
+    {
+        pDb->DispAllErrors(henv, hdbc, hstmt);
+        pDb->RollbackTrans();
+        CloseCursor(hstmt);
+        return(FALSE);
+    }

 
 

-       // Commit the transaction and close the cursor
-       if (! pDb->CommitTrans())
-               return(FALSE);
-       if (! CloseCursor(hstmt))
-               return(FALSE);
+    // Commit the transaction and close the cursor
+    if (! pDb->CommitTrans())
+        return(FALSE);
+    if (! CloseCursor(hstmt))
+        return(FALSE);

 
 

-       // Index Created Successfully
-       return(TRUE);
+    // Index Created Successfully
+    return(TRUE);

 
 

-}  // wxTable::CreateIndex()
+}  // wxDbTable::CreateIndex()

 
 

-/********** wxTable::DropIndex() **********/
-bool wxTable::DropIndex(const char * idxName)
+
+/********** wxDbTable::DropIndex() **********/
+bool wxDbTable::DropIndex(const wxString &idxName)

 {
 {

-       // NOTE: This function returns TRUE if the Index does not exist, but
-       //       only for identified databases.  Code will need to be added
-       //                      below for any other databases when those databases are defined
-       //       to handle this situation consistently
+    // NOTE: This function returns TRUE if the Index does not exist, but
+    //       only for identified databases.  Code will need to be added
+    //       below for any other databases when those databases are defined
+    //       to handle this situation consistently

 
 

-       char sqlStmt[DB_MAX_STATEMENT_LEN];
+    wxString sqlStmt;

 
 

-       if (pDb->Dbms() == dbmsACCESS)
-               sprintf(sqlStmt, "DROP INDEX %s ON %s",idxName,tableName);
-       else if (pDb->Dbms() == dbmsSYBASE_ASE)
-               sprintf(sqlStmt, "DROP INDEX %s.%s",tableName,idxName);
-       else
-               sprintf(sqlStmt, "DROP INDEX %s",idxName);
+    if (pDb->Dbms() == dbmsACCESS || pDb->Dbms() == dbmsMY_SQL ||
+        pDb->Dbms() == dbmsDBASE /*|| Paradox needs this syntax too when we add support*/)
+        sqlStmt.Printf(wxT("DROP INDEX %s ON %s"),idxName.c_str(), tableName.c_str());
+    else if ((pDb->Dbms() == dbmsMS_SQL_SERVER) ||
+             (pDb->Dbms() == dbmsSYBASE_ASE))
+        sqlStmt.Printf(wxT("DROP INDEX %s.%s"),tableName.c_str(), idxName.c_str());
+    else
+        sqlStmt.Printf(wxT("DROP INDEX %s"),idxName.c_str());

 
 

-       pDb->WriteSqlLog(sqlStmt);
+    pDb->WriteSqlLog(sqlStmt);

 
 #ifdef DBDEBUG_CONSOLE
 
 #ifdef DBDEBUG_CONSOLE

-       cout << endl << sqlStmt << endl;
+    cout << endl << sqlStmt.c_str() << endl;

 #endif
 
 #endif
 

-       if (SQLExecDirect(hstmt, (UCHAR FAR *) sqlStmt, SQL_NTS) != SQL_SUCCESS)
-       {
-               // Check for "Index not found" error and ignore
-               pDb->GetNextError(henv, hdbc, hstmt);
-               if (wxStrcmp(pDb->sqlState,"S0012"))  // "Index not found"
-               {
-                       // Check for product specific error codes
-                       if (!((pDb->Dbms() == dbmsSYBASE_ASA    && !wxStrcmp(pDb->sqlState,"42000"))   ||  // v5.x (and lower?)
-                                  (pDb->Dbms() == dbmsSYBASE_ASE       && !wxStrcmp(pDb->sqlState,"S0002"))   ||  // Base table not found
-                                  (pDb->Dbms() == dbmsMY_SQL                   && !wxStrcmp(pDb->sqlState,"42S02"))       // untested
-                                       ))
-                       {
-                               pDb->DispNextError();
-                               pDb->DispAllErrors(henv, hdbc, hstmt);
-                               pDb->RollbackTrans();
-                               CloseCursor(hstmt);
-                               return(FALSE);
-                       }
-               }
-       }
-
-       // Commit the transaction and close the cursor
-       if (! pDb->CommitTrans())
-               return(FALSE);
-       if (! CloseCursor(hstmt))
-               return(FALSE);
-
-       return(TRUE);
-}  // wxTable::DropIndex()
-
-/********** wxTable::Insert() **********/
-int wxTable::Insert(void)
+    if (SQLExecDirect(hstmt, (UCHAR FAR *) sqlStmt.c_str(), SQL_NTS) != SQL_SUCCESS)
+    {
+        // Check for "Index not found" error and ignore
+        pDb->GetNextError(henv, hdbc, hstmt);
+        if (wxStrcmp(pDb->sqlState,wxT("S0012")))  // "Index not found"
+        {
+            // Check for product specific error codes
+            if (!((pDb->Dbms() == dbmsSYBASE_ASA    && !wxStrcmp(pDb->sqlState,wxT("42000"))) ||  // v5.x (and lower?)
+                  (pDb->Dbms() == dbmsSYBASE_ASE    && !wxStrcmp(pDb->sqlState,wxT("37000"))) ||
+                  (pDb->Dbms() == dbmsMS_SQL_SERVER && !wxStrcmp(pDb->sqlState,wxT("S1000"))) ||
+                  (pDb->Dbms() == dbmsINTERBASE      && !wxStrcmp(pDb->sqlState,wxT("S1000"))) ||
+                  (pDb->Dbms() == dbmsSYBASE_ASE    && !wxStrcmp(pDb->sqlState,wxT("S0002"))) ||  // Base table not found
+                  (pDb->Dbms() == dbmsMY_SQL        && !wxStrcmp(pDb->sqlState,wxT("42S12"))) ||  // tested by Christopher Ludwik Marino-Cebulski using v3.23.21beta
+                  (pDb->Dbms() == dbmsPOSTGRES      && !wxStrcmp(pDb->sqlState,wxT("08S01")))
+               ))
+            {
+                pDb->DispNextError();
+                pDb->DispAllErrors(henv, hdbc, hstmt);
+                pDb->RollbackTrans();
+                CloseCursor(hstmt);
+                return(FALSE);
+            }
+        }
+    }
+
+    // Commit the transaction and close the cursor
+    if (! pDb->CommitTrans())
+        return(FALSE);
+    if (! CloseCursor(hstmt))
+        return(FALSE);
+
+    return(TRUE);
+}  // wxDbTable::DropIndex()
+
+
+/********** wxDbTable::SetOrderByColNums() **********/
+bool wxDbTable::SetOrderByColNums(UWORD first, ... )
+{
+    int        colNo = first;  // using 'int' to be able to look for wxDB_NO_MORE_COLUN_NUMBERS
+    va_list     argptr;
+
+    bool        abort = FALSE;
+    wxString    tempStr;
+
+    va_start(argptr, first);     /* Initialize variable arguments. */
+    while (!abort && (colNo != wxDB_NO_MORE_COLUMN_NUMBERS))
+    {
+        // Make sure the passed in column number
+        // is within the valid range of columns
+        //
+        // Valid columns are 0 thru noCols-1
+        if (colNo >= noCols || colNo < 0)
+        {
+            abort = TRUE;
+            continue;
+        }
+
+        if (colNo != first)
+            tempStr += wxT(",");
+
+        tempStr += colDefs[colNo].ColName;
+        colNo = va_arg (argptr, int);
+    }
+    va_end (argptr);              /* Reset variable arguments.      */
+
+    SetOrderByClause(tempStr);
+
+    return (!abort);
+}  // wxDbTable::SetOrderByColNums()
+
+
+/********** wxDbTable::Insert() **********/
+int wxDbTable::Insert(void)

 {
 {

-       assert(!queryOnly);
-       if (queryOnly)
-               return(DB_FAILURE);
-
-       bindInsertParams();
-
-       // Insert the record by executing the already prepared insert statement
-       RETCODE retcode;
-       retcode=SQLExecute(hstmtInsert);
-       if (retcode != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO)
-       {
-               // Check to see if integrity constraint was violated
-               pDb->GetNextError(henv, hdbc, hstmtInsert);
-               if (! wxStrcmp(pDb->sqlState, "23000"))  // Integrity constraint violated
-                       return(DB_ERR_INTEGRITY_CONSTRAINT_VIOL);
-               else
-               {
-                       pDb->DispNextError();
-                       pDb->DispAllErrors(henv, hdbc, hstmtInsert);
-                       return(DB_FAILURE);
-               }
-       }
-
-       // Record inserted into the datasource successfully
-       return(DB_SUCCESS);
-
-}  // wxTable::Insert()
-
-/********** wxTable::Update() **********/
-bool wxTable::Update(void)
+    wxASSERT(!queryOnly);
+    if (queryOnly || !insertable)
+        return(DB_FAILURE);
+
+    bindInsertParams();
+
+    // Insert the record by executing the already prepared insert statement
+    RETCODE retcode;
+    retcode=SQLExecute(hstmtInsert);
+    if (retcode != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO)
+    {
+        // Check to see if integrity constraint was violated
+        pDb->GetNextError(henv, hdbc, hstmtInsert);
+        if (! wxStrcmp(pDb->sqlState, wxT("23000")))  // Integrity constraint violated
+            return(DB_ERR_INTEGRITY_CONSTRAINT_VIOL);
+        else
+        {
+            pDb->DispNextError();
+            pDb->DispAllErrors(henv, hdbc, hstmtInsert);
+            return(DB_FAILURE);
+        }
+    }
+
+    // Record inserted into the datasource successfully
+    return(DB_SUCCESS);
+
+}  // wxDbTable::Insert()
+
+
+/********** wxDbTable::Update() **********/
+bool wxDbTable::Update(void)

 {
 {

-       assert(!queryOnly);
-       if (queryOnly)
-               return(FALSE);
+    wxASSERT(!queryOnly);
+    if (queryOnly)
+        return(FALSE);

 
 

-       char sqlStmt[DB_MAX_STATEMENT_LEN];
+    wxString sqlStmt;

 
 

-       // Build the SQL UPDATE statement
-       GetUpdateStmt(sqlStmt, DB_UPD_KEYFIELDS);
+    // Build the SQL UPDATE statement
+    BuildUpdateStmt(sqlStmt, DB_UPD_KEYFIELDS);

 
 

-       pDb->WriteSqlLog(sqlStmt);
+    pDb->WriteSqlLog(sqlStmt);

 
 #ifdef DBDEBUG_CONSOLE
 
 #ifdef DBDEBUG_CONSOLE

-       cout << endl << sqlStmt << endl << endl;
+    cout << endl << sqlStmt.c_str() << endl << endl;

 #endif
 
 #endif
 

-       // Execute the SQL UPDATE statement
-       return(execUpdate(sqlStmt));
+    // Execute the SQL UPDATE statement
+    return(execUpdate(sqlStmt));
+
+}  // wxDbTable::Update()

 
 

-}  // wxTable::Update()

 
 

-/********** wxTable::Update(pSqlStmt) **********/
-bool wxTable::Update(const char *pSqlStmt)
+/********** wxDbTable::Update(pSqlStmt) **********/
+bool wxDbTable::Update(const wxString &pSqlStmt)

 {
 {

-       assert(!queryOnly);
-       if (queryOnly)
-               return(FALSE);
+    wxASSERT(!queryOnly);
+    if (queryOnly)
+        return(FALSE);

 
 

-       pDb->WriteSqlLog(pSqlStmt);
+    pDb->WriteSqlLog(pSqlStmt);

 
 

-       return(execUpdate(pSqlStmt));
+    return(execUpdate(pSqlStmt));

 
 

-}  // wxTable::Update(pSqlStmt)
+}  // wxDbTable::Update(pSqlStmt)

 
 

-/********** wxTable::UpdateWhere() **********/
-bool wxTable::UpdateWhere(const char *pWhereClause)
+
+/********** wxDbTable::UpdateWhere() **********/
+bool wxDbTable::UpdateWhere(const wxString &pWhereClause)

 {
 {

-       assert(!queryOnly);
-       if (queryOnly)
-               return(FALSE);
+    wxASSERT(!queryOnly);
+    if (queryOnly)
+        return(FALSE);

 
 

-       char sqlStmt[DB_MAX_STATEMENT_LEN];
+    wxString sqlStmt;

 
 

-       // Build the SQL UPDATE statement
-       GetUpdateStmt(sqlStmt, DB_UPD_WHERE, pWhereClause);
+    // Build the SQL UPDATE statement
+    BuildUpdateStmt(sqlStmt, DB_UPD_WHERE, pWhereClause);

 
 

-       pDb->WriteSqlLog(sqlStmt);
+    pDb->WriteSqlLog(sqlStmt);

 
 #ifdef DBDEBUG_CONSOLE
 
 #ifdef DBDEBUG_CONSOLE

-       cout << endl << sqlStmt << endl << endl;
+    cout << endl << sqlStmt.c_str() << endl << endl;

 #endif
 
 #endif
 

-       // Execute the SQL UPDATE statement
-       return(execUpdate(sqlStmt));
+    // Execute the SQL UPDATE statement
+    return(execUpdate(sqlStmt));
+
+}  // wxDbTable::UpdateWhere()

 
 

-}  // wxTable::UpdateWhere()

 
 

-/********** wxTable::Delete() **********/
-bool wxTable::Delete(void)
+/********** wxDbTable::Delete() **********/
+bool wxDbTable::Delete(void)

 {
 {

-       assert(!queryOnly);
-       if (queryOnly)
-               return(FALSE);
+    wxASSERT(!queryOnly);
+    if (queryOnly)
+        return(FALSE);
+
+    wxString sqlStmt;
+    sqlStmt.Empty();

 
 

-       char sqlStmt[DB_MAX_STATEMENT_LEN];
+    // Build the SQL DELETE statement
+    BuildDeleteStmt(sqlStmt, DB_DEL_KEYFIELDS);

 
 

-       // Build the SQL DELETE statement
-       GetDeleteStmt(sqlStmt, DB_DEL_KEYFIELDS);
+    pDb->WriteSqlLog(sqlStmt);

 
 

-       pDb->WriteSqlLog(sqlStmt);
+    // Execute the SQL DELETE statement
+    return(execDelete(sqlStmt));

 
 

-       // Execute the SQL DELETE statement
-       return(execDelete(sqlStmt));
+}  // wxDbTable::Delete()

 
 

-}  // wxTable::Delete()

 
 

-/********** wxTable::DeleteWhere() **********/
-bool wxTable::DeleteWhere(const char *pWhereClause)
+/********** wxDbTable::DeleteWhere() **********/
+bool wxDbTable::DeleteWhere(const wxString &pWhereClause)

 {
 {

-       assert(!queryOnly);
-       if (queryOnly)
-               return(FALSE);
+    wxASSERT(!queryOnly);
+    if (queryOnly)
+        return(FALSE);

 
 

-       char sqlStmt[DB_MAX_STATEMENT_LEN];
+    wxString sqlStmt;
+    sqlStmt.Empty();

 
 

-       // Build the SQL DELETE statement
-       GetDeleteStmt(sqlStmt, DB_DEL_WHERE, pWhereClause);
+    // Build the SQL DELETE statement
+    BuildDeleteStmt(sqlStmt, DB_DEL_WHERE, pWhereClause);

 
 

-       pDb->WriteSqlLog(sqlStmt);
+    pDb->WriteSqlLog(sqlStmt);

 
 

-       // Execute the SQL DELETE statement
-       return(execDelete(sqlStmt));
+    // Execute the SQL DELETE statement
+    return(execDelete(sqlStmt));

 
 

-}  // wxTable::DeleteWhere()
+}  // wxDbTable::DeleteWhere()

 
 

-/********** wxTable::DeleteMatching() **********/
-bool wxTable::DeleteMatching(void)
+
+/********** wxDbTable::DeleteMatching() **********/
+bool wxDbTable::DeleteMatching(void)

 {
 {

-       assert(!queryOnly);
-       if (queryOnly)
-               return(FALSE);
+    wxASSERT(!queryOnly);
+    if (queryOnly)
+        return(FALSE);

 
 

-       char sqlStmt[DB_MAX_STATEMENT_LEN];
+    wxString sqlStmt;
+    sqlStmt.Empty();

 
 

-       // Build the SQL DELETE statement
-       GetDeleteStmt(sqlStmt, DB_DEL_MATCHING);
+    // Build the SQL DELETE statement
+    BuildDeleteStmt(sqlStmt, DB_DEL_MATCHING);

 
 

-       pDb->WriteSqlLog(sqlStmt);
+    pDb->WriteSqlLog(sqlStmt);

 
 

-       // Execute the SQL DELETE statement
-       return(execDelete(sqlStmt));
+    // Execute the SQL DELETE statement
+    return(execDelete(sqlStmt));

 
 

-}  // wxTable::DeleteMatching()
+}  // wxDbTable::DeleteMatching()

 
 

-/********** wxTable::GetUpdateStmt() **********/
-void wxTable::GetUpdateStmt(char *pSqlStmt, int typeOfUpd, const char *pWhereClause)
-{
-       assert(!queryOnly);
-       if (queryOnly)
-               return;
-
-       char whereClause[DB_MAX_WHERE_CLAUSE_LEN];
-       bool firstColumn = TRUE;
-
-       whereClause[0] = 0;
-       sprintf(pSqlStmt, "UPDATE %s SET ", tableName);
-
-       // Append a list of columns to be updated
-       int i;
-       for (i = 0; i < noCols; i++)
-       {
-               // Only append Updateable columns
-               if (colDefs[i].Updateable)
-               {
-                       if (! firstColumn)
-                               wxStrcat(pSqlStmt, ",");
-                       else
-                               firstColumn = FALSE;
-                       wxStrcat(pSqlStmt, colDefs[i].ColName);
-                       wxStrcat(pSqlStmt, " = ?");
-               }
-       }
-
-       // Append the WHERE clause to the SQL UPDATE statement
-       wxStrcat(pSqlStmt, " WHERE ");
-       switch(typeOfUpd)
-       {
-       case DB_UPD_KEYFIELDS:
-               // If the datasource supports the ROWID column, build
-               // the where on ROWID for efficiency purposes.
-               // e.g. UPDATE PARTS SET Col1 = ?, Col2 = ? WHERE ROWID = '111.222.333'
-               if (CanUpdByROWID())
-               {
-                       SDWORD cb;
-                       char   rowid[ROWID_LEN];
-
-                       // Get the ROWID value.  If not successful retreiving the ROWID,
-                       // simply fall down through the code and build the WHERE clause
-                       // based on the key fields.
-                       if (SQLGetData(hstmt, noCols+1, SQL_C_CHAR, (UCHAR*) rowid, ROWID_LEN, &cb) == SQL_SUCCESS)
-                       {
-                               wxStrcat(pSqlStmt, "ROWID = '");
-                               wxStrcat(pSqlStmt, rowid);
-                               wxStrcat(pSqlStmt, "'");
-                               break;
-                       }
-               }
-               // Unable to delete by ROWID, so build a WHERE
-               // clause based on the keyfields.
-               GetWhereClause(whereClause, DB_WHERE_KEYFIELDS);
-               wxStrcat(pSqlStmt, whereClause);
-               break;
-       case DB_UPD_WHERE:
-               wxStrcat(pSqlStmt, pWhereClause);
-               break;
-       }
-}  // GetUpdateStmt()
-
-/********** wxTable::GetDeleteStmt() **********/
-void wxTable::GetDeleteStmt(char *pSqlStmt, int typeOfDel, const char *pWhereClause)
+
+/********** wxDbTable::IsColNull() **********/
+bool wxDbTable::IsColNull(UWORD colNo)

 {
 {

-       assert(!queryOnly);
-       if (queryOnly)
-               return;
-
-       char whereClause[DB_MAX_WHERE_CLAUSE_LEN];
-
-       whereClause[0] = 0;
-
-       // Handle the case of DeleteWhere() and the where clause is blank.  It should
-       // delete all records from the database in this case.
-       if (typeOfDel == DB_DEL_WHERE && (pWhereClause == 0 || wxStrlen(pWhereClause) == 0))
-       {
-               sprintf(pSqlStmt, "DELETE FROM %s", tableName);
-               return;
-       }
-
-       sprintf(pSqlStmt, "DELETE FROM %s WHERE ", tableName);
-
-       // Append the WHERE clause to the SQL DELETE statement
-       switch(typeOfDel)
-       {
-       case DB_DEL_KEYFIELDS:
-               // If the datasource supports the ROWID column, build
-               // the where on ROWID for efficiency purposes.
-               // e.g. DELETE FROM PARTS WHERE ROWID = '111.222.333'
-               if (CanUpdByROWID())
-               {
-                       SDWORD cb;
-                       char   rowid[ROWID_LEN];
-
-                       // Get the ROWID value.  If not successful retreiving the ROWID,
-                       // simply fall down through the code and build the WHERE clause
-                       // based on the key fields.
-                       if (SQLGetData(hstmt, noCols+1, SQL_C_CHAR, (UCHAR*) rowid, ROWID_LEN, &cb) == SQL_SUCCESS)
-                       {
-                               wxStrcat(pSqlStmt, "ROWID = '");
-                               wxStrcat(pSqlStmt, rowid);
-                               wxStrcat(pSqlStmt, "'");
-                               break;
-                       }
-               }
-               // Unable to delete by ROWID, so build a WHERE
-               // clause based on the keyfields.
-               GetWhereClause(whereClause, DB_WHERE_KEYFIELDS);
-               wxStrcat(pSqlStmt, whereClause);
-               break;
-       case DB_DEL_WHERE:
-               wxStrcat(pSqlStmt, pWhereClause);
-               break;
-       case DB_DEL_MATCHING:
-               GetWhereClause(whereClause, DB_WHERE_MATCHING);
-               wxStrcat(pSqlStmt, whereClause);
-               break;
-       }
-
-}  // GetDeleteStmt()
-
-/********** wxTable::GetWhereClause() **********/

 /*
 /*

- * Note: GetWhereClause() currently ignores timestamp columns.
- *       They are not included as part of the where clause.
- */
+    This logic is just not right.  It would indicate TRUE
+    if a numeric field were set to a value of 0.
+
+    switch(colDefs[colNo].SqlCtype)
+    {
+        case SQL_C_CHAR:
+            return(((UCHAR FAR *) colDefs[colNo].PtrDataObj)[0] == 0);
+        case SQL_C_SSHORT:
+            return((  *((SWORD *) colDefs[colNo].PtrDataObj))   == 0);
+        case SQL_C_USHORT:
+            return((   *((UWORD*) colDefs[colNo].PtrDataObj))   == 0);
+        case SQL_C_SLONG:
+            return(( *((SDWORD *) colDefs[colNo].PtrDataObj))   == 0);
+        case SQL_C_ULONG:
+            return(( *((UDWORD *) colDefs[colNo].PtrDataObj))   == 0);
+        case SQL_C_FLOAT:
+            return(( *((SFLOAT *) colDefs[colNo].PtrDataObj))   == 0);
+        case SQL_C_DOUBLE:
+            return((*((SDOUBLE *) colDefs[colNo].PtrDataObj))   == 0);
+        case SQL_C_TIMESTAMP:
+            TIMESTAMP_STRUCT *pDt;
+            pDt = (TIMESTAMP_STRUCT *) colDefs[colNo].PtrDataObj;
+            if (pDt->year == 0 && pDt->month == 0 && pDt->day == 0)
+                return(TRUE);
+            else
+                return(FALSE);
+        default:
+            return(TRUE);
+    }
+*/
+    return (colDefs[colNo].Null);
+}  // wxDbTable::IsColNull()
+

 
 

-void wxTable::GetWhereClause(char *pWhereClause, int typeOfWhere, const char *qualTableName)
+/********** wxDbTable::CanSelectForUpdate() **********/
+bool wxDbTable::CanSelectForUpdate(void)

 {
 {

-       bool moreThanOneColumn = FALSE;
-       char colValue[255];
-
-       // Loop through the columns building a where clause as you go
-       int i;
-       for (i = 0; i < noCols; i++)
-       {
-               // Determine if this column should be included in the WHERE clause
-               if ((typeOfWhere == DB_WHERE_KEYFIELDS && colDefs[i].KeyField) ||
-                        (typeOfWhere == DB_WHERE_MATCHING  && (! IsColNull(i))))
-               {
-                       // Skip over timestamp columns
-                       if (colDefs[i].SqlCtype == SQL_C_TIMESTAMP)
-                               continue;
-                       // If there is more than 1 column, join them with the keyword "AND"
-                       if (moreThanOneColumn)
-                               wxStrcat(pWhereClause, " AND ");
-                       else
-                               moreThanOneColumn = TRUE;
-                       // Concatenate where phrase for the column
-                       if (qualTableName && wxStrlen(qualTableName))
-                       {
-                               wxStrcat(pWhereClause, qualTableName);
-                               wxStrcat(pWhereClause, ".");
-                       }
-                       wxStrcat(pWhereClause, colDefs[i].ColName);
-                       wxStrcat(pWhereClause, " = ");
-                       switch(colDefs[i].SqlCtype)
-                       {
-                       case SQL_C_CHAR:
-                               sprintf(colValue, "'%s'", (UCHAR FAR *) colDefs[i].PtrDataObj);
-                               break;
-                       case SQL_C_SSHORT:
-                               sprintf(colValue, "%hi", *((SWORD *) colDefs[i].PtrDataObj));
-                               break;
-                       case SQL_C_USHORT:
-                               sprintf(colValue, "%hu", *((UWORD *) colDefs[i].PtrDataObj));
-                               break;
-                       case SQL_C_SLONG:
-                               sprintf(colValue, "%li", *((SDWORD *) colDefs[i].PtrDataObj));
-                               break;
-                       case SQL_C_ULONG:
-                               sprintf(colValue, "%lu", *((UDWORD *) colDefs[i].PtrDataObj));
-                               break;
-                       case SQL_C_FLOAT:
-                               sprintf(colValue, "%.6f", *((SFLOAT *) colDefs[i].PtrDataObj));
-                               break;
-                       case SQL_C_DOUBLE:
-                               sprintf(colValue, "%.6f", *((SDOUBLE *) colDefs[i].PtrDataObj));
-                               break;
-                       }
-                       wxStrcat(pWhereClause, colValue);
-               }
-       }
-
-}  // wxTable::GetWhereClause()
-
-/********** wxTable::IsColNull() **********/
-bool wxTable::IsColNull(int colNo)
+    if (queryOnly)
+        return FALSE;
+
+    if (pDb->Dbms() == dbmsMY_SQL)
+        return FALSE;
+
+    if ((pDb->Dbms() == dbmsORACLE) ||
+        (pDb->dbInf.posStmts & SQL_PS_SELECT_FOR_UPDATE))
+        return(TRUE);
+    else
+        return(FALSE);
+
+}  // wxDbTable::CanSelectForUpdate()
+
+
+/********** wxDbTable::CanUpdByROWID() **********/
+bool wxDbTable::CanUpdByROWID(void)

 {
 {

-       switch(colDefs[colNo].SqlCtype)
-       {
-       case SQL_C_CHAR:
-               return(((UCHAR FAR *) colDefs[colNo].PtrDataObj)[0] == 0);
-       case SQL_C_SSHORT:
-               return((  *((SWORD *) colDefs[colNo].PtrDataObj))   == 0);
-       case SQL_C_USHORT:
-               return((   *((UWORD*) colDefs[colNo].PtrDataObj))   == 0);
-       case SQL_C_SLONG:
-               return(( *((SDWORD *) colDefs[colNo].PtrDataObj))   == 0);
-       case SQL_C_ULONG:
-               return(( *((UDWORD *) colDefs[colNo].PtrDataObj))   == 0);
-       case SQL_C_FLOAT:
-               return(( *((SFLOAT *) colDefs[colNo].PtrDataObj))   == 0);
-       case SQL_C_DOUBLE:
-               return((*((SDOUBLE *) colDefs[colNo].PtrDataObj))   == 0);
-       case SQL_C_TIMESTAMP:
-               TIMESTAMP_STRUCT *pDt;
-               pDt = (TIMESTAMP_STRUCT *) colDefs[colNo].PtrDataObj;
-               if (pDt->year == 0 && pDt->month == 0 && pDt->day == 0)
-                       return(TRUE);
-               else
-                       return(FALSE);
-       default:
-               return(TRUE);
-       }
-
-}  // wxTable::IsColNull()
-
-/********** wxTable::CanSelectForUpdate() **********/
-bool wxTable::CanSelectForUpdate(void)
+/*
+ * NOTE: Returning FALSE for now until this can be debugged,
+ *        as the ROWID is not getting updated correctly
+ */
+    return FALSE;
+/*
+    if (pDb->Dbms() == dbmsORACLE)
+        return(TRUE);
+    else
+        return(FALSE);
+*/
+}  // wxDbTable::CanUpdByROWID()
+
+
+/********** wxDbTable::IsCursorClosedOnCommit() **********/
+bool wxDbTable::IsCursorClosedOnCommit(void)

 {
 {

-       if (pDb->Dbms() == dbmsMY_SQL)
-               return FALSE;
+    if (pDb->dbInf.cursorCommitBehavior == SQL_CB_PRESERVE)
+        return(FALSE);
+    else
+        return(TRUE);
+
+}  // wxDbTable::IsCursorClosedOnCommit()

 
 

-       if (pDb->dbInf.posStmts & SQL_PS_SELECT_FOR_UPDATE)
-               return(TRUE);
-       else
-               return(FALSE);

 
 

-}  // wxTable::CanSelectForUpdate()

 
 

-/********** wxTable::CanUpdByROWID() **********/
-bool wxTable::CanUpdByROWID(void)
+/********** wxDbTable::ClearMemberVar() **********/
+void wxDbTable::ClearMemberVar(UWORD colNo, bool setToNull)

 {
 {

+    wxASSERT(colNo < noCols);
+
+    switch(colDefs[colNo].SqlCtype)
+    {
+        case SQL_C_CHAR:
+            ((UCHAR FAR *) colDefs[colNo].PtrDataObj)[0]    = 0;
+            break;
+        case SQL_C_SSHORT:
+            *((SWORD *) colDefs[colNo].PtrDataObj)          = 0;
+            break;
+        case SQL_C_USHORT:
+            *((UWORD*) colDefs[colNo].PtrDataObj)           = 0;
+            break;
+        case SQL_C_SLONG:
+            *((SDWORD *) colDefs[colNo].PtrDataObj)         = 0;
+            break;
+        case SQL_C_ULONG:
+            *((UDWORD *) colDefs[colNo].PtrDataObj)         = 0;
+            break;
+        case SQL_C_FLOAT:
+            *((SFLOAT *) colDefs[colNo].PtrDataObj)         = 0.0f;
+            break;
+        case SQL_C_DOUBLE:
+            *((SDOUBLE *) colDefs[colNo].PtrDataObj)        = 0.0f;
+            break;
+        case SQL_C_TIMESTAMP:
+            TIMESTAMP_STRUCT *pDt;
+            pDt = (TIMESTAMP_STRUCT *) colDefs[colNo].PtrDataObj;
+            pDt->year = 0;
+            pDt->month = 0;
+            pDt->day = 0;
+            pDt->hour = 0;
+            pDt->minute = 0;
+            pDt->second = 0;
+            pDt->fraction = 0;
+            break;
+    }
+
+    if (setToNull)
+        SetColNull(colNo);
+}  // wxDbTable::ClearMemberVar()
+
+
+/********** wxDbTable::ClearMemberVars() **********/
+void wxDbTable::ClearMemberVars(bool setToNull)
+{
+    int i;

 
 

-//NOTE: Returning FALSE for now until this can be debugged,
-//          as the ROWID is not getting updated correctly
-       return FALSE;
+    // Loop through the columns setting each member variable to zero
+    for (i=0; i < noCols; i++)
+        ClearMemberVar(i,setToNull);

 
 

-       if (pDb->Dbms() == dbmsORACLE)
-               return(TRUE);
-       else
-               return(FALSE);
+}  // wxDbTable::ClearMemberVars()

 
 

-}  // wxTable::CanUpdByROWID()

 
 

-/********** wxTable::IsCursorClosedOnCommit() **********/
-bool wxTable::IsCursorClosedOnCommit(void)
+/********** wxDbTable::SetQueryTimeout() **********/
+bool wxDbTable::SetQueryTimeout(UDWORD nSeconds)

 {
 {

-       if (pDb->dbInf.cursorCommitBehavior == SQL_CB_PRESERVE)
-               return(FALSE);
-       else
-               return(TRUE);
+    if (SQLSetStmtOption(hstmtInsert, SQL_QUERY_TIMEOUT, nSeconds) != SQL_SUCCESS)
+        return(pDb->DispAllErrors(henv, hdbc, hstmtInsert));
+    if (SQLSetStmtOption(hstmtUpdate, SQL_QUERY_TIMEOUT, nSeconds) != SQL_SUCCESS)
+        return(pDb->DispAllErrors(henv, hdbc, hstmtUpdate));
+    if (SQLSetStmtOption(hstmtDelete, SQL_QUERY_TIMEOUT, nSeconds) != SQL_SUCCESS)
+        return(pDb->DispAllErrors(henv, hdbc, hstmtDelete));
+    if (SQLSetStmtOption(hstmtInternal, SQL_QUERY_TIMEOUT, nSeconds) != SQL_SUCCESS)
+        return(pDb->DispAllErrors(henv, hdbc, hstmtInternal));

 
 

-}  // wxTable::IsCursorClosedOnCommit()
+    // Completed Successfully
+    return(TRUE);

 
 

-/********** wxTable::ClearMemberVars() **********/
-void wxTable::ClearMemberVars(void)
-{
-       // Loop through the columns setting each member variable to zero
-       int i;
-       for (i = 0; i < noCols; i++)
-       {
-               switch(colDefs[i].SqlCtype)
-               {
-               case SQL_C_CHAR:
-                       ((UCHAR FAR *) colDefs[i].PtrDataObj)[0]        = 0;
-                       break;
-               case SQL_C_SSHORT:
-                       *((SWORD *) colDefs[i].PtrDataObj)                      = 0;
-                       break;
-               case SQL_C_USHORT:
-                       *((UWORD*) colDefs[i].PtrDataObj)                       = 0;
-                       break;
-               case SQL_C_SLONG:
-                       *((SDWORD *) colDefs[i].PtrDataObj)                     = 0;
-                       break;
-               case SQL_C_ULONG:
-                       *((UDWORD *) colDefs[i].PtrDataObj)                     = 0;
-                       break;
-               case SQL_C_FLOAT:
-                       *((SFLOAT *) colDefs[i].PtrDataObj)                     = 0.0f;
-                       break;
-               case SQL_C_DOUBLE:
-                       *((SDOUBLE *) colDefs[i].PtrDataObj)            = 0.0f;
-                       break;
-               case SQL_C_TIMESTAMP:
-                       TIMESTAMP_STRUCT *pDt;
-                       pDt = (TIMESTAMP_STRUCT *) colDefs[i].PtrDataObj;
-                       pDt->year = 0;
-                       pDt->month = 0;
-                       pDt->day = 0;
-                       pDt->hour = 0;
-                       pDt->minute = 0;
-                       pDt->second = 0;
-                       pDt->fraction = 0;
-                       break;
-               }
-       }
-
-}  // wxTable::ClearMemberVars()
-
-/********** wxTable::SetQueryTimeout() **********/
-bool wxTable::SetQueryTimeout(UDWORD nSeconds)
+}  // wxDbTable::SetQueryTimeout()
+
+
+/********** wxDbTable::SetColDefs() **********/
+void wxDbTable::SetColDefs(UWORD index, const wxString &fieldName, int dataType, void *pData,
+                           SWORD cType, int size, bool keyField, bool upd,
+                           bool insAllow, bool derivedCol)

 {
 {

-       if (SQLSetStmtOption(hstmtInsert, SQL_QUERY_TIMEOUT, nSeconds) != SQL_SUCCESS)
-               return(pDb->DispAllErrors(henv, hdbc, hstmtInsert));
-       if (SQLSetStmtOption(hstmtUpdate, SQL_QUERY_TIMEOUT, nSeconds) != SQL_SUCCESS)
-               return(pDb->DispAllErrors(henv, hdbc, hstmtUpdate));
-       if (SQLSetStmtOption(hstmtDelete, SQL_QUERY_TIMEOUT, nSeconds) != SQL_SUCCESS)
-               return(pDb->DispAllErrors(henv, hdbc, hstmtDelete));
-       if (SQLSetStmtOption(hstmtInternal, SQL_QUERY_TIMEOUT, nSeconds) != SQL_SUCCESS)
-               return(pDb->DispAllErrors(henv, hdbc, hstmtInternal));
-
-       // Completed Successfully
-       return(TRUE);
-
-}  // wxTable::SetQueryTimeout()
-
-/********** wxTable::SetColDefs() **********/
-void wxTable::SetColDefs (int index, const char *fieldName, int dataType, void *pData,
-                                                                int cType, int size, bool keyField, bool upd,
-                                                                bool insAllow, bool derivedCol)
+    if (!colDefs)  // May happen if the database connection fails
+        return;
+
+    if (fieldName.Length() > (unsigned int) DB_MAX_COLUMN_NAME_LEN)
+    {
+        int assertColumnNameTooLong = 0;
+        wxStrncpy(colDefs[index].ColName, fieldName, DB_MAX_COLUMN_NAME_LEN);
+        colDefs[index].ColName[DB_MAX_COLUMN_NAME_LEN] = 0;
+        wxString tmpMsg;
+        tmpMsg.Printf("Column name '%s' is too long. Truncated to '%s'.",fieldName.c_str(),colDefs[index].ColName);
+        wxASSERT_MSG(assertColumnNameTooLong,tmpMsg.c_str());
+    }
+    else
+        wxStrcpy(colDefs[index].ColName, fieldName);
+
+    colDefs[index].DbDataType       = dataType;
+    colDefs[index].PtrDataObj       = pData;
+    colDefs[index].SqlCtype         = cType;
+    colDefs[index].SzDataObj        = size;
+    colDefs[index].KeyField         = keyField;
+    colDefs[index].DerivedCol       = derivedCol;
+    // Derived columns by definition would NOT be "Insertable" or "Updateable"
+    if (derivedCol)
+    {
+        colDefs[index].Updateable       = FALSE;
+        colDefs[index].InsertAllowed    = FALSE;
+    }
+    else
+    {
+        colDefs[index].Updateable       = upd;
+        colDefs[index].InsertAllowed    = insAllow;
+    }
+
+    colDefs[index].Null                 = FALSE;
+    
+}  // wxDbTable::SetColDefs()
+
+
+/********** wxDbTable::SetColDefs() **********/
+wxDbColDataPtr* wxDbTable::SetColDefs(wxDbColInf *pColInfs, UWORD numCols)

 {
 {

-       if (!colDefs)  // May happen if the database connection fails
-               return;
-
-       if (wxStrlen(fieldName) > (unsigned int) DB_MAX_COLUMN_NAME_LEN)
-       {
-               wxStrncpy (colDefs[index].ColName, fieldName, DB_MAX_COLUMN_NAME_LEN);
-               colDefs[index].ColName[DB_MAX_COLUMN_NAME_LEN] = 0;
-       }
-       else
-               wxStrcpy(colDefs[index].ColName, fieldName);
-
-       colDefs[index].DbDataType               = dataType;
-       colDefs[index].PtrDataObj               = pData;
-       colDefs[index].SqlCtype                 = cType;
-       colDefs[index].SzDataObj                = size;
-       colDefs[index].KeyField                 = keyField;
-       colDefs[index].DerivedCol               = derivedCol;
-       // Derived columns by definition would NOT be "Insertable" or "Updateable"
-       if (derivedCol)
-       {
-               colDefs[index].Updateable               = FALSE;
-               colDefs[index].InsertAllowed    = FALSE;
-       }
-       else
-       {
-               colDefs[index].Updateable               = upd;
-               colDefs[index].InsertAllowed    = insAllow;
-       }
-
-       colDefs[index].Null                                     = FALSE;
-       
-}  // wxTable::SetColDefs()
-
-/********** wxTable::SetCursor() **********/
-void wxTable::SetCursor(HSTMT *hstmtActivate)
+    wxASSERT(pColInfs);
+    wxDbColDataPtr *pColDataPtrs = NULL;
+
+    if (pColInfs)
+    {
+        UWORD index;
+       
+        pColDataPtrs = new wxDbColDataPtr[numCols+1];
+
+        for (index = 0; index < numCols; index++)
+        {
+            // Process the fields
+            switch (pColInfs[index].dbDataType)
+            {
+                case DB_DATA_TYPE_VARCHAR:
+                   pColDataPtrs[index].PtrDataObj = new wxChar[pColInfs[index].bufferLength+1];
+                   pColDataPtrs[index].SzDataObj  = pColInfs[index].columnSize;
+                   pColDataPtrs[index].SqlCtype   = SQL_C_CHAR;
+                   break;
+                case DB_DATA_TYPE_INTEGER:
+                    // Can be long or short
+                    if (pColInfs[index].bufferLength == sizeof(long))
+                    {
+                      pColDataPtrs[index].PtrDataObj = new long;
+                      pColDataPtrs[index].SzDataObj  = sizeof(long);
+                      pColDataPtrs[index].SqlCtype   = SQL_C_SLONG;
+                    }
+                    else
+                    {
+                        pColDataPtrs[index].PtrDataObj = new short;
+                        pColDataPtrs[index].SzDataObj  = sizeof(short);
+                        pColDataPtrs[index].SqlCtype   = SQL_C_SSHORT;
+                    }
+                    break;
+                case DB_DATA_TYPE_FLOAT:
+                    // Can be float or double
+                    if (pColInfs[index].bufferLength == sizeof(float))
+                    {
+                        pColDataPtrs[index].PtrDataObj = new float;
+                        pColDataPtrs[index].SzDataObj  = sizeof(float);
+                        pColDataPtrs[index].SqlCtype   = SQL_C_FLOAT;
+                    }
+                    else
+                    {
+                        pColDataPtrs[index].PtrDataObj = new double;
+                        pColDataPtrs[index].SzDataObj  = sizeof(double);
+                        pColDataPtrs[index].SqlCtype   = SQL_C_DOUBLE;
+                    }  
+                    break;
+                case DB_DATA_TYPE_DATE:
+                    pColDataPtrs[index].PtrDataObj = new TIMESTAMP_STRUCT;
+                    pColDataPtrs[index].SzDataObj  = sizeof(TIMESTAMP_STRUCT);
+                    pColDataPtrs[index].SqlCtype   = SQL_C_TIMESTAMP;
+                    break;
+                case DB_DATA_TYPE_BLOB:
+                    int notSupportedYet = 0;
+                    wxASSERT_MSG(notSupportedYet, wxT("This form of ::SetColDefs() cannot be used with BLOB columns"));
+                    pColDataPtrs[index].PtrDataObj = /*BLOB ADDITION NEEDED*/NULL;
+                    pColDataPtrs[index].SzDataObj  = /*BLOB ADDITION NEEDED*/sizeof(void *);
+                    pColDataPtrs[index].SqlCtype   = SQL_VARBINARY;
+                    break;
+            }
+            if (pColDataPtrs[index].PtrDataObj != NULL)
+                SetColDefs (index,pColInfs[index].colName,pColInfs[index].dbDataType, pColDataPtrs[index].PtrDataObj, pColDataPtrs[index].SqlCtype, pColDataPtrs[index].SzDataObj);
+            else
+            {
+                // Unable to build all the column definitions, as either one of 
+                // the calls to "new" failed above, or there was a BLOB field
+                // to have a column definition for.  If BLOBs are to be used,
+                // the other form of ::SetColDefs() must be used, as it is impossible
+                // to know the maximum size to create the PtrDataObj to be.
+                delete [] pColDataPtrs;
+                return NULL;
+            }
+        }
+    }
+
+    return (pColDataPtrs);
+
+} // wxDbTable::SetColDefs()
+
+
+/********** wxDbTable::SetCursor() **********/
+void wxDbTable::SetCursor(HSTMT *hstmtActivate)

 {
 {

-       if (hstmtActivate == DEFAULT_CURSOR)
-               hstmt = *hstmtDefault;
-       else
-               hstmt = *hstmtActivate;
+    if (hstmtActivate == wxDB_DEFAULT_CURSOR)
+        hstmt = *hstmtDefault;
+    else
+        hstmt = *hstmtActivate;

 
 

-}  // wxTable::SetCursor()
+}  // wxDbTable::SetCursor()

 
 

-/********** wxTable::Count(const char *) **********/
-ULONG wxTable::Count(const char *args)
+
+/********** wxDbTable::Count(const wxString &) **********/
+ULONG wxDbTable::Count(const wxString &args)

 {
 {

-       ULONG l;
-       char sqlStmt[DB_MAX_STATEMENT_LEN];
-       SDWORD cb;
-
-       // Build a "SELECT COUNT(*) FROM queryTableName [WHERE whereClause]" SQL Statement
-       wxStrcpy(sqlStmt, "SELECT COUNT(");
-       wxStrcat(sqlStmt, args);
-       wxStrcat(sqlStmt, ") FROM ");
-       wxStrcat(sqlStmt, queryTableName);
-
-       if (from && wxStrlen(from))
-               wxStrcat(sqlStmt, from);
-
-       // Add the where clause if one is provided
-       if (where && wxStrlen(where))
-       {
-               wxStrcat(sqlStmt, " WHERE ");
-               wxStrcat(sqlStmt, where);
-       }
-
-       pDb->WriteSqlLog(sqlStmt);
-
-       // Initialize the Count cursor if it's not already initialized
-       if (!hstmtCount)
-       {
-               hstmtCount = NewCursor(FALSE,FALSE);
-               assert(hstmtCount);
-               if (!hstmtCount)
-                       return(0);
-       }
-
-       // Execute the SQL statement
-       if (SQLExecDirect(*hstmtCount, (UCHAR FAR *) sqlStmt, SQL_NTS) != SQL_SUCCESS)
-       {
-               pDb->DispAllErrors(henv, hdbc, *hstmtCount);
-               return(0);
-       }
-
-       // Fetch the record
-       if (SQLFetch(*hstmtCount) != SQL_SUCCESS)
-       {
-               pDb->DispAllErrors(henv, hdbc, *hstmtCount);
-               return(0);
-       }
-
-       // Obtain the result
-       if (SQLGetData(*hstmtCount, 1, SQL_C_ULONG, &l, sizeof(l), &cb) != SQL_SUCCESS)
-       {
-               pDb->DispAllErrors(henv, hdbc, *hstmtCount);
-               return(0);
-       }
-
-       // Free the cursor
-       if (SQLFreeStmt(*hstmtCount, SQL_CLOSE) != SQL_SUCCESS)
-               pDb->DispAllErrors(henv, hdbc, *hstmtCount);
-
-       // Return the record count
-       return(l);
-
-}  // wxTable::Count()
-
-/********** wxTable::Refresh() **********/
-bool wxTable::Refresh(void)
+    ULONG count;
+    wxString sqlStmt;
+    SDWORD cb;
+
+    // Build a "SELECT COUNT(*) FROM queryTableName [WHERE whereClause]" SQL Statement
+    sqlStmt  = wxT("SELECT COUNT(");
+    sqlStmt += args;
+    sqlStmt += wxT(") FROM ");
+    sqlStmt += queryTableName;
+#if wxODBC_BACKWARD_COMPATABILITY
+    if (from && wxStrlen(from))
+#else
+    if (from.Length())
+#endif
+        sqlStmt += from;
+
+    // Add the where clause if one is provided
+#if wxODBC_BACKWARD_COMPATABILITY
+    if (where && wxStrlen(where))
+#else
+    if (where.Length())
+#endif
+    {
+        sqlStmt += wxT(" WHERE ");
+        sqlStmt += where;
+    }
+
+    pDb->WriteSqlLog(sqlStmt);
+
+    // Initialize the Count cursor if it's not already initialized
+    if (!hstmtCount)
+    {
+        hstmtCount = GetNewCursor(FALSE,FALSE);
+        wxASSERT(hstmtCount);
+        if (!hstmtCount)
+            return(0);
+    }
+
+    // Execute the SQL statement
+    if (SQLExecDirect(*hstmtCount, (UCHAR FAR *) sqlStmt.c_str(), SQL_NTS) != SQL_SUCCESS)
+    {
+        pDb->DispAllErrors(henv, hdbc, *hstmtCount);
+        return(0);
+    }
+
+    // Fetch the record
+    if (SQLFetch(*hstmtCount) != SQL_SUCCESS)
+    {
+        pDb->DispAllErrors(henv, hdbc, *hstmtCount);
+        return(0);
+    }
+
+    // Obtain the result
+    if (SQLGetData(*hstmtCount, (UWORD)1, SQL_C_ULONG, &count, sizeof(count), &cb) != SQL_SUCCESS)
+    {
+        pDb->DispAllErrors(henv, hdbc, *hstmtCount);
+        return(0);
+    }
+
+    // Free the cursor
+    if (SQLFreeStmt(*hstmtCount, SQL_CLOSE) != SQL_SUCCESS)
+        pDb->DispAllErrors(henv, hdbc, *hstmtCount);
+
+    // Return the record count
+    return(count);
+
+}  // wxDbTable::Count()
+
+
+/********** wxDbTable::Refresh() **********/
+bool wxDbTable::Refresh(void)

 {
 {

-       bool result = TRUE;
-
-       // Switch to the internal cursor so any active cursors are not corrupted
-       HSTMT currCursor = GetCursor();
-       hstmt = hstmtInternal;
-
-       // Save the where and order by clauses
-       char *saveWhere = where;
-       char *saveOrderBy = orderBy;
-
-       // Build a where clause to refetch the record with.  Try and use the
-       // ROWID if it's available, ow use the key fields.
-       char whereClause[DB_MAX_WHERE_CLAUSE_LEN+1];
-       wxStrcpy(whereClause, "");
-       if (CanUpdByROWID())
-       {
-               SDWORD cb;
-               char   rowid[ROWID_LEN+1];
-
-               // Get the ROWID value.  If not successful retreiving the ROWID,
-               // simply fall down through the code and build the WHERE clause
-               // based on the key fields.
-               if (SQLGetData(hstmt, noCols+1, SQL_C_CHAR, (UCHAR*) rowid, ROWID_LEN, &cb) == SQL_SUCCESS)
-               {
-                       wxStrcat(whereClause, queryTableName);
-                       wxStrcat(whereClause, ".ROWID = '");
-                       wxStrcat(whereClause, rowid);
-                       wxStrcat(whereClause, "'");
-               }
-       }
-
-       // If unable to use the ROWID, build a where clause from the keyfields
-       if (wxStrlen(whereClause) == 0)
-               GetWhereClause(whereClause, DB_WHERE_KEYFIELDS, queryTableName);
-
-       // Requery the record
-       where = whereClause;
-       orderBy = 0;
-       if (!Query())
-               result = FALSE;
-
-       if (result && !GetNext())
-               result = FALSE;
-
-       // Switch back to original cursor
-       SetCursor(&currCursor);
-
-       // Free the internal cursor
-       if (SQLFreeStmt(hstmtInternal, SQL_CLOSE) != SQL_SUCCESS)
-               pDb->DispAllErrors(henv, hdbc, hstmtInternal);
-
-       // Restore the original where and order by clauses
-       where     = saveWhere;
-       orderBy = saveOrderBy;
-
-       return(result);
-
-}  // wxTable::Refresh()
-
-/********** wxTable::SetNull(UINT colNo) **********/
-bool wxTable::SetNull(int colNo)
+    bool result = TRUE;
+
+    // Switch to the internal cursor so any active cursors are not corrupted
+    HSTMT currCursor = GetCursor();
+    hstmt = hstmtInternal;
+#if wxODBC_BACKWARD_COMPATABILITY
+    // Save the where and order by clauses
+    char *saveWhere = where;
+    char *saveOrderBy = orderBy;
+#else
+    wxString saveWhere = where;
+    wxString saveOrderBy = orderBy;
+#endif
+    // Build a where clause to refetch the record with.  Try and use the
+    // ROWID if it's available, ow use the key fields.
+    wxString whereClause;
+    whereClause.Empty();
+
+    if (CanUpdByROWID())
+    {
+        SDWORD cb;
+        wxChar   rowid[wxDB_ROWID_LEN+1];
+
+        // Get the ROWID value.  If not successful retreiving the ROWID,
+        // simply fall down through the code and build the WHERE clause
+        // based on the key fields.
+        if (SQLGetData(hstmt, (UWORD)(noCols+1), SQL_C_CHAR, (UCHAR*) rowid, wxDB_ROWID_LEN, &cb) == SQL_SUCCESS)
+        {
+            whereClause += queryTableName;
+            whereClause += wxT(".ROWID = '");
+            whereClause += rowid;
+            whereClause += wxT("'");
+        }
+    }
+
+    // If unable to use the ROWID, build a where clause from the keyfields
+    if (wxStrlen(whereClause) == 0)
+        BuildWhereClause(whereClause, DB_WHERE_KEYFIELDS, queryTableName);
+
+    // Requery the record
+    where = whereClause;
+    orderBy.Empty();
+    if (!Query())
+        result = FALSE;
+
+    if (result && !GetNext())
+        result = FALSE;
+
+    // Switch back to original cursor
+    SetCursor(&currCursor);
+
+    // Free the internal cursor
+    if (SQLFreeStmt(hstmtInternal, SQL_CLOSE) != SQL_SUCCESS)
+        pDb->DispAllErrors(henv, hdbc, hstmtInternal);
+
+    // Restore the original where and order by clauses
+    where   = saveWhere;
+    orderBy = saveOrderBy;
+
+    return(result);
+
+}  // wxDbTable::Refresh()
+
+
+/********** wxDbTable::SetColNull() **********/
+bool wxDbTable::SetColNull(UWORD colNo, bool set)

 {
 {

-       if (colNo < noCols)
-               return(colDefs[colNo].Null = TRUE);
-       else
-               return(FALSE);
+    if (colNo < noCols)
+    {
+        colDefs[colNo].Null = set;
+        if (set)  // Blank out the values in the member variable
+            ClearMemberVar(colNo,FALSE);  // Must call with FALSE, or infinite recursion will happen
+        return(TRUE);
+    }
+    else
+        return(FALSE);
+
+}  // wxDbTable::SetColNull()

 
 

-}  // wxTable::SetNull(UINT colNo)

 
 

-/********** wxTable::SetNull(char *colName) **********/
-bool wxTable::SetNull(const char *colName)
+/********** wxDbTable::SetColNull() **********/
+bool wxDbTable::SetColNull(const wxString &colName, bool set)

 {
 {

-       int i;
-       for (i = 0; i < noCols; i++)
-       {
-               if (!wxStricmp(colName, colDefs[i].ColName))
-                       break;
-       }
-
-       if (i < noCols)
-               return(colDefs[i].Null = TRUE);
-       else
-               return(FALSE);
-
-}  // wxTable::SetNull(char *colName)
-
-/********** wxTable::NewCursor() **********/
-HSTMT *wxTable::NewCursor(bool setCursor, bool bindColumns)
+    int i;
+    for (i = 0; i < noCols; i++)
+    {
+        if (!wxStricmp(colName, colDefs[i].ColName))
+            break;
+    }
+
+    if (i < noCols)
+    {
+        colDefs[i].Null = set;
+        if (set)  // Blank out the values in the member variable
+            ClearMemberVar(i,FALSE);  // Must call with FALSE, or infinite recursion will happen
+        return(TRUE);
+    }
+    else
+        return(FALSE);
+
+}  // wxDbTable::SetColNull()
+
+
+/********** wxDbTable::GetNewCursor() **********/
+HSTMT *wxDbTable::GetNewCursor(bool setCursor, bool bindColumns)

 {
 {

-       HSTMT *newHSTMT = new HSTMT;
-       assert(newHSTMT);
-       if (!newHSTMT)
-               return(0);
-
-       if (SQLAllocStmt(hdbc, newHSTMT) != SQL_SUCCESS)
-       {
-               pDb->DispAllErrors(henv, hdbc);
-               delete newHSTMT;
-               return(0);
-       }
-
-       if (SQLSetStmtOption(*newHSTMT, SQL_CURSOR_TYPE, cursorType) != SQL_SUCCESS)
-       {
-               pDb->DispAllErrors(henv, hdbc, *newHSTMT);
-               delete newHSTMT;
-               return(0);
-       }
-
-       if (bindColumns)
-       {
-               if(!bindCols(*newHSTMT))
-               {
-                       delete newHSTMT;
-                       return(0);
-               }
-       }
-
-       if (setCursor)
-               SetCursor(newHSTMT);
-
-       return(newHSTMT);
-
-}   // wxTable::NewCursor()
-
-/********** wxTable::DeleteCursor() **********/
-bool wxTable::DeleteCursor(HSTMT *hstmtDel)
+    HSTMT *newHSTMT = new HSTMT;
+    wxASSERT(newHSTMT);
+    if (!newHSTMT)
+        return(0);
+
+    if (SQLAllocStmt(hdbc, newHSTMT) != SQL_SUCCESS)
+    {
+        pDb->DispAllErrors(henv, hdbc);
+        delete newHSTMT;
+        return(0);
+    }
+
+    if (SQLSetStmtOption(*newHSTMT, SQL_CURSOR_TYPE, cursorType) != SQL_SUCCESS)
+    {
+        pDb->DispAllErrors(henv, hdbc, *newHSTMT);
+        delete newHSTMT;
+        return(0);
+    }
+
+    if (bindColumns)
+    {
+        if(!bindCols(*newHSTMT))
+        {
+            delete newHSTMT;
+            return(0);
+        }
+    }
+
+    if (setCursor)
+        SetCursor(newHSTMT);
+
+    return(newHSTMT);
+
+}   // wxDbTable::GetNewCursor()
+
+
+/********** wxDbTable::DeleteCursor() **********/
+bool wxDbTable::DeleteCursor(HSTMT *hstmtDel)

 {
 {

-       bool result = TRUE;
+    bool result = TRUE;

 
 

-       if (!hstmtDel)  // Cursor already deleted
-               return(result);
+    if (!hstmtDel)  // Cursor already deleted
+        return(result);

 
 

-       if (SQLFreeStmt(*hstmtDel, SQL_DROP) != SQL_SUCCESS)
-       {
-               pDb->DispAllErrors(henv, hdbc);
-               result = FALSE;
-       }
+/*
+ODBC 3.0 says to use this form
+    if (SQLFreeHandle(*hstmtDel, SQL_DROP) != SQL_SUCCESS)
+    
+*/
+    if (SQLFreeStmt(*hstmtDel, SQL_DROP) != SQL_SUCCESS)
+    {
+        pDb->DispAllErrors(henv, hdbc);
+        result = FALSE;
+    }

 
 

-       delete hstmtDel;
+    delete hstmtDel;

 
 

-       return(result);
+    return(result);

 
 

-}  // wxTable::DeleteCursor()
+}  // wxDbTable::DeleteCursor()

 
 #endif  // wxUSE_ODBC
 
 
 #endif  // wxUSE_ODBC