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Removed generic scrolwin.cpp from wxGTK list because of filename duplication
[wxWidgets.git] / src / common / dbtable.cpp
diff --git a/src/common/dbtable.cpp b/src/common/dbtable.cpp
index 9daf02fcb7dde79fef49b8db70e70a1b9a424dde..a9cd88abb1d72314b1c0f2e9facfcb6c2aae6625 100644 (file)
--- a/src/common/dbtable.cpp
+++ b/src/common/dbtable.cpp
@@ -3,11 +3,8 @@
 // Purpose:     Implementation of the wxDbTable class.
 // Author:      Doug Card
 // Modified by: George Tasker
 // Purpose:     Implementation of the wxDbTable class.
 // Author:      Doug Card
 // Modified by: George Tasker
-// 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 wxDbTable objects 
+//              Bart Jourquin
+//              Mark Johnson
 // Created:     9.96
 // RCS-ID:      $Id$
 // Copyright:   (c) 1996 Remstar International, Inc.
 // Created:     9.96
 // RCS-ID:      $Id$
 // Copyright:   (c) 1996 Remstar International, Inc.
@@ -35,9 +32,9 @@
 #include "wx/version.h"
 
 #if wxMAJOR_VERSION == 2
 #include "wx/version.h"
 
 #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
@@ -78,7 +75,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <assert.h>
+//#include <assert.h>
 
 #if   wxMAJOR_VERSION == 1
     #include "table.h"
 
 #if   wxMAJOR_VERSION == 1
     #include "table.h"
@@ -105,10 +102,62 @@ ULONG lastTableID = 0;
 #endif
 
 
 #endif
 
 
-/********** wxDbTable::wxDbTable() **********/
-wxDbTable::wxDbTable(wxDb *pwxDb, const char *tblName, const int nCols,
-                    const char *qryTblName, bool qryOnly, const char *tblPath)
+/********** wxDbColDef::wxDbColDef() Constructor **********/
+wxDbColDef::wxDbColDef()
+{
+    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;
     pDb                 = pwxDb;                    // Pointer to the wxDb object
     henv                = 0;
     hdbc                = 0;
@@ -121,34 +170,40 @@ wxDbTable::wxDbTable(wxDb *pwxDb, const char *tblName, const int nCols,
     hstmtInternal       = 0;
     colDefs             = 0;
     tableID             = 0;
     hstmtInternal       = 0;
     colDefs             = 0;
     tableID             = 0;
-    noCols              = nCols;                    // No. of cols in the table
-    where               = "";                       // Where clause
-    orderBy             = "";                       // Order By clause
-    from                = "";                       // From clause
+    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;
     selectForUpdate     = FALSE;                    // SELECT ... FOR UPDATE; Indicates whether to include the FOR UPDATE phrase
     queryOnly           = qryOnly;
     insertable          = TRUE;
+    tablePath.Empty();
+    tableName.Empty();
+    queryTableName.Empty();
 
 
-    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);
+    wxASSERT(tblName.Length());
+    wxASSERT(pDb);
 
     if (!pDb)
 
     if (!pDb)
-        return;
+        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();
     pDb->incrementTableCount();
-
+    
     wxString s;
     tableID = ++lastTableID;
     wxString s;
     tableID = ++lastTableID;
-    s.sprintf("wxDbTable constructor (%-20s) tableID:[%6lu] pDb:[%p]", tblName,tableID,pDb);
-
+    s.Printf(wxT("wxDbTable constructor (%-20s) tableID:[%6lu] pDb:[%p]"), tblName.c_str(), tableID, pDb);
+    
 #ifdef __WXDEBUG__
     wxTablesInUse *tableInUse;
     tableInUse            = new wxTablesInUse();
 #ifdef __WXDEBUG__
     wxTablesInUse *tableInUse;
     tableInUse            = new wxTablesInUse();
@@ -157,17 +212,17 @@ wxDbTable::wxDbTable(wxDb *pwxDb, const char *tblName, const int nCols,
     tableInUse->pDb       = pDb;
     TablesInUse.Append(tableInUse);
 #endif
     tableInUse->pDb       = pDb;
     TablesInUse.Append(tableInUse);
 #endif
-
-    pDb->WriteSqlLog(s.c_str());
-
+    
+    pDb->WriteSqlLog(s);
+    
     // Grab the HENV and HDBC from the wxDb object
     henv = pDb->GetHENV();
     hdbc = pDb->GetHDBC();
     // Grab the HENV and HDBC from the wxDb object
     henv = pDb->GetHENV();
     hdbc = pDb->GetHDBC();
-
+    
     // Allocate space for column definitions
     if (noCols)
     // Allocate space for column definitions
     if (noCols)
-        colDefs = new wxDbColDef[noCols];  // Points to the first column defintion
-
+        colDefs = new wxDbColDef[noCols];  // Points to the first column definition
+    
     // Allocate statement handles for the table
     if (!queryOnly)
     {
     // Allocate statement handles for the table
     if (!queryOnly)
     {
@@ -184,62 +239,64 @@ wxDbTable::wxDbTable(wxDb *pwxDb, const char *tblName, const int nCols,
     // Allocate a separate statement handle for internal use
     if (SQLAllocStmt(hdbc, &hstmtInternal) != 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;
     // Set the cursor type for the statement handles
     cursorType = SQL_CURSOR_STATIC;
-   
+    
     if (SQLSetStmtOption(hstmtInternal, SQL_CURSOR_TYPE, cursorType) != SQL_SUCCESS)
     if (SQLSetStmtOption(hstmtInternal, SQL_CURSOR_TYPE, cursorType) != SQL_SUCCESS)
-      {        
+    { 
         // Check to see if cursor type is supported
         pDb->GetNextError(henv, hdbc, hstmtInternal);
         // Check to see if cursor type is supported
         pDb->GetNextError(henv, hdbc, hstmtInternal);
-        if (! wxStrcmp(pDb->sqlState, "01S02"))  // Option Value Changed
-         {
-           
+        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)
             // 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->DispAllErrors(henv, hdbc, hstmtInternal);
 #ifdef DBDEBUG_CONSOLE
 #ifdef DBDEBUG_CONSOLE
-            cout << "Static cursor changed to: ";
+            cout << wxT("Static cursor changed to: ");
             switch(cursorType)
             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;
-             }
+            {
+            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
             cout << endl << endl;
 #endif
-
-           // 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;
-                 }
-             }
-         }
-       else
-         {
+            // 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);
             pDb->DispNextError();
             pDb->DispAllErrors(henv, hdbc, hstmtInternal);
-         }
+        }
     }
 #ifdef DBDEBUG_CONSOLE
     else
     }
 #ifdef DBDEBUG_CONSOLE
     else
-        cout << "Cursor Type set to STATIC" << endl << endl;
+        cout << wxT("Cursor Type set to STATIC") << endl << endl;
 #endif
 #endif
-
+    
     if (!queryOnly)
     {
         // Set the cursor type for the INSERT statement handle
     if (!queryOnly)
     {
         // Set the cursor type for the INSERT statement handle
@@ -252,23 +309,24 @@ wxDbTable::wxDbTable(wxDb *pwxDb, const char *tblName, const int nCols,
         if (SQLSetStmtOption(hstmtUpdate, SQL_CURSOR_TYPE, SQL_CURSOR_FORWARD_ONLY) != SQL_SUCCESS)
             pDb->DispAllErrors(henv, hdbc, hstmtUpdate);
     }
         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);
     // Make the default cursor the active cursor
     hstmtDefault = GetNewCursor(FALSE,FALSE);
-    assert(hstmtDefault);
+    wxASSERT(hstmtDefault);
     hstmt = *hstmtDefault;
 
     hstmt = *hstmtDefault;
 
-}  // wxDbTable::wxDbTable()
+    return TRUE;
 
 
+}  // wxDbTable::initialize()
 
 
-/********** wxDbTable::~wxDbTable() **********/
-wxDbTable::~wxDbTable()
+
+void wxDbTable::cleanup()
 {
     wxString s;
     if (pDb)
     {
 {
     wxString s;
     if (pDb)
     {
-        s.sprintf("wxDbTable destructor (%-20s) tableID:[%6lu] pDb:[%p]", tableName,tableID,pDb);
-        pDb->WriteSqlLog(s.c_str());
+        s.Printf(wxT("wxDbTable destructor (%-20s) tableID:[%6lu] pDb:[%p]"), tableName.c_str(), tableID, pDb);
+        pDb->WriteSqlLog(s);
     }
 
 #ifdef __WXDEBUG__
     }
 
 #ifdef __WXDEBUG__
@@ -285,7 +343,7 @@ wxDbTable::~wxDbTable()
             {
                 found = TRUE;
                 if (!TablesInUse.DeleteNode(pNode))
             {
                 found = TRUE;
                 if (!TablesInUse.DeleteNode(pNode))
-                    wxLogDebug (s.c_str(),wxT("Unable to delete node!"));
+                    wxLogDebug (s,wxT("Unable to delete node!"));
             }
             else
                 pNode = pNode->Next();
             }
             else
                 pNode = pNode->Next();
@@ -293,8 +351,8 @@ wxDbTable::~wxDbTable()
         if (!found)
         {
             wxString msg;
         if (!found)
         {
             wxString msg;
-            msg.sprintf(wxT("Unable to find the tableID in the linked\nlist of tables in use.\n\n%s"),s.c_str());
-            wxLogDebug (msg.c_str(),wxT("NOTICE..."));
+            msg.Printf(wxT("Unable to find the tableID in the linked\nlist of tables in use.\n\n%s"),s);
+            wxLogDebug (msg,wxT("NOTICE..."));
         }
     }
 #endif
         }
     }
 #endif
@@ -311,20 +369,41 @@ wxDbTable::~wxDbTable()
     if (!queryOnly)
     {
         if (hstmtInsert)
     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 (SQLFreeStmt(hstmtInsert, SQL_DROP) != SQL_SUCCESS)
                 pDb->DispAllErrors(henv, hdbc);
+        }
 
         if (hstmtDelete)
 
         if (hstmtDelete)
+        {
+/*
+ODBC 3.0 says to use this form
+            if (SQLFreeHandle(*hstmtDel, SQL_DROP) != SQL_SUCCESS)
+*/
             if (SQLFreeStmt(hstmtDelete, SQL_DROP) != SQL_SUCCESS)
             if (SQLFreeStmt(hstmtDelete, SQL_DROP) != SQL_SUCCESS)
+                pDb->DispAllErrors(henv, hdbc);
+        }
 
         if (hstmtUpdate)
 
         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 (SQLFreeStmt(hstmtUpdate, SQL_DROP) != SQL_SUCCESS)
                 pDb->DispAllErrors(henv, hdbc);
-
+        }
     }
     }
+
     if (hstmtInternal)
     if (hstmtInternal)
+    {
         if (SQLFreeStmt(hstmtInternal, SQL_DROP) != SQL_SUCCESS)
             pDb->DispAllErrors(henv, hdbc);
         if (SQLFreeStmt(hstmtInternal, SQL_DROP) != SQL_SUCCESS)
             pDb->DispAllErrors(henv, hdbc);
+    }
 
     // Delete dynamically allocated cursors
     if (hstmtDefault)
 
     // Delete dynamically allocated cursors
     if (hstmtDefault)
@@ -332,160 +411,148 @@ wxDbTable::~wxDbTable()
 
     if (hstmtCount)
         DeleteCursor(hstmtCount);
 
     if (hstmtCount)
         DeleteCursor(hstmtCount);
-
-
-}  // wxDbTable::~wxDbTable()
-
+}  // wxDbTable::cleanup()
 
 
 /***************************** PRIVATE FUNCTIONS *****************************/
 
 
 
 
 /***************************** PRIVATE FUNCTIONS *****************************/
 
 
-
-/********** wxDbTable::bindInsertParams() **********/
-bool wxDbTable::bindInsertParams(void)
+/********** wxDbTable::bindUpdateParams() **********/
+bool wxDbTable::bindParams(bool forUpdate)
 {
 {
-    assert(!queryOnly);
+    wxASSERT(!queryOnly);
     if (queryOnly)
         return(FALSE);
     if (queryOnly)
         return(FALSE);
-
+    
     SWORD   fSqlType    = 0;
     UDWORD  precision   = 0;
     SWORD   scale       = 0;
     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,colNo;
+    
+    // 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++)
     {
     for (i = 0, colNo = 1; i < noCols; i++)
     {
-        if (! colDefs[i].InsertAllowed)
-            continue;
-        switch(colDefs[i].DbDataType)
+        if (forUpdate)
         {
         {
-        
-        case DB_DATA_TYPE_VARCHAR:
-            fSqlType = pDb->GetTypeInfVarchar().FsqlType;         
-            precision = colDefs[i].SzDataObj;
-            scale = 0;
-            colDefs[i].CbValue = SQL_NTS;
-            break;
-        case DB_DATA_TYPE_INTEGER:
-            fSqlType = pDb->GetTypeInfInteger().FsqlType;
-            precision = pDb->GetTypeInfInteger().Precision;
-            scale = 0;
-            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;
-            colDefs[i].CbValue = 0;
-            break;
-        case DB_DATA_TYPE_DATE:
-            fSqlType = pDb->GetTypeInfDate().FsqlType;
-            precision = pDb->GetTypeInfDate().Precision;
-            scale = 0;
-            colDefs[i].CbValue = 0;
-            break;
+            if (! colDefs[i].Updateable)
+                continue;
         }
         }
-        // Null values
-        if (colDefs[i].Null)
+        else
         {
         {
-            colDefs[i].CbValue = SQL_NULL_DATA;
-            colDefs[i].Null = FALSE;
+            if (! colDefs[i].InsertAllowed)
+                continue;
         }
 
         }
 
-       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));
+        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);
 
     // Completed successfully
     return(TRUE);
 
+}  // wxDbTable::bindParams()
+
+
+/********** wxDbTable::bindInsertParams() **********/
+bool wxDbTable::bindInsertParams(void)
+{
+    return bindParams(FALSE);
 }  // wxDbTable::bindInsertParams()
 
 
 /********** wxDbTable::bindUpdateParams() **********/
 bool wxDbTable::bindUpdateParams(void)
 {
 }  // 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 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->GetTypeInfVarchar().FsqlType;
-            precision = colDefs[i].SzDataObj;
-            scale = 0;
-            colDefs[i].CbValue = SQL_NTS;
-            break;
-        case DB_DATA_TYPE_INTEGER:
-            fSqlType = pDb->GetTypeInfInteger().FsqlType;
-            precision = pDb->GetTypeInfInteger().Precision;
-            scale = 0;
-            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;
-            colDefs[i].CbValue = 0;
-            break;
-        case DB_DATA_TYPE_DATE:
-            fSqlType = pDb->GetTypeInfDate().FsqlType;
-            precision = pDb->GetTypeInfDate().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);
-
+    return bindParams(TRUE);
 }  // wxDbTable::bindUpdateParams()
 
 
 /********** wxDbTable::bindCols() **********/
 bool wxDbTable::bindCols(HSTMT cursor)
 {
 }  // wxDbTable::bindUpdateParams()
 
 
 /********** wxDbTable::bindCols() **********/
 bool wxDbTable::bindCols(HSTMT cursor)
 {
-    static SDWORD  cb;
+//RG-NULL    static SDWORD  cb;
     
     // Bind each column of the table to a memory address for fetching data
     
     // Bind each column of the table to a memory address for fetching data
-    int i;
+    UWORD i;
     for (i = 0; i < noCols; 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));
-      }
+    {
+        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);
 
     // Completed successfully
     return(TRUE);
@@ -506,10 +573,20 @@ bool wxDbTable::getRec(UWORD fetchType)
 
         retcode = SQLExtendedFetch(hstmt, fetchType, 0, &cRowsFetched, &rowStatus);
         if (retcode  != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO)
 
         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));
             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
     {
     }
     else
     {
@@ -522,6 +599,14 @@ bool wxDbTable::getRec(UWORD fetchType)
             else
                 return(pDb->DispAllErrors(henv, hdbc, hstmt));
         }
             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
     }
 
     // Completed successfully
@@ -531,10 +616,10 @@ bool wxDbTable::getRec(UWORD fetchType)
 
 
 /********** wxDbTable::execDelete() **********/
 
 
 /********** wxDbTable::execDelete() **********/
-bool wxDbTable::execDelete(const char *pSqlStmt)
+bool wxDbTable::execDelete(const wxString &pSqlStmt)
 {
     // Execute the DELETE statement
 {
     // Execute the DELETE statement
-    if (SQLExecDirect(hstmtDelete, (UCHAR FAR *) pSqlStmt, SQL_NTS) != SQL_SUCCESS)
+    if (SQLExecDirect(hstmtDelete, (UCHAR FAR *) pSqlStmt.c_str(), SQL_NTS) != SQL_SUCCESS)
         return(pDb->DispAllErrors(henv, hdbc, hstmtDelete));
 
     // Record deleted successfully
         return(pDb->DispAllErrors(henv, hdbc, hstmtDelete));
 
     // Record deleted successfully
@@ -544,10 +629,10 @@ bool wxDbTable::execDelete(const char *pSqlStmt)
 
 
 /********** wxDbTable::execUpdate() **********/
 
 
 /********** wxDbTable::execUpdate() **********/
-bool wxDbTable::execUpdate(const char *pSqlStmt)
+bool wxDbTable::execUpdate(const wxString &pSqlStmt)
 {
     // Execute the UPDATE statement
 {
     // Execute the UPDATE statement
-    if (SQLExecDirect(hstmtUpdate, (UCHAR FAR *) pSqlStmt, SQL_NTS) != SQL_SUCCESS)
+    if (SQLExecDirect(hstmtUpdate, (UCHAR FAR *) pSqlStmt.c_str(), SQL_NTS) != SQL_SUCCESS)
         return(pDb->DispAllErrors(henv, hdbc, hstmtUpdate));
 
     // Record deleted successfully
         return(pDb->DispAllErrors(henv, hdbc, hstmtUpdate));
 
     // Record deleted successfully
@@ -557,25 +642,10 @@ bool wxDbTable::execUpdate(const char *pSqlStmt)
 
 
 /********** wxDbTable::query() **********/
 
 
 /********** wxDbTable::query() **********/
-bool wxDbTable::query(int queryType, bool forUpdate, bool distinct, const char *pSqlStmt)
+bool wxDbTable::query(int queryType, bool forUpdate, bool distinct, const wxString &pSqlStmt)
 {
 {
+    wxString sqlStmt;
 
 
-
-
-/*  SQLFreeStmt(hstmt, SQL_CLOSE);
-  if (SQLExecDirect(hstmt, (UCHAR FAR *) pSqlStmt, SQL_NTS) == SQL_SUCCESS)
-    return(TRUE);
-  else
-    {
-      pDb->DispAllErrors(henv, hdbc, hstmt);
-      return(FALSE);
-    }
-*/
-
-
-    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();
     if (forUpdate)
         // The user may wish to select for update, but the DBMS may not be capable
         selectForUpdate = CanSelectForUpdate();
@@ -584,29 +654,35 @@ bool wxDbTable::query(int queryType, bool forUpdate, bool distinct, const char *
 
     // Set the SQL SELECT string
     if (queryType != DB_SELECT_STATEMENT)               // A select statement was not passed in,
 
     // Set the SQL SELECT string
     if (queryType != DB_SELECT_STATEMENT)               // A select statement was not passed in,
-    {                                                               // so generate a select statement.
+    {                                                   // so generate a select statement.
         BuildSelectStmt(sqlStmt, queryType, distinct);
         pDb->WriteSqlLog(sqlStmt);
         BuildSelectStmt(sqlStmt, queryType, distinct);
         pDb->WriteSqlLog(sqlStmt);
-    } else wxStrcpy(sqlStmt, pSqlStmt);
+    }
+/*
+   This is the block of code that got added during the 2.2.1 merge with 
+   the 2.2 main branch that somehow got added here when it should not have.  - gt
+
+    else 
+        wxStrcpy(sqlStmt, pSqlStmt);
 
     SQLFreeStmt(hstmt, SQL_CLOSE);
     if (SQLExecDirect(hstmt, (UCHAR FAR *) sqlStmt, SQL_NTS) == SQL_SUCCESS)
 
     SQLFreeStmt(hstmt, SQL_CLOSE);
     if (SQLExecDirect(hstmt, (UCHAR FAR *) sqlStmt, SQL_NTS) == SQL_SUCCESS)
-      return(TRUE);
+        return(TRUE);
     else
     else
-      {
+    {
         pDb->DispAllErrors(henv, hdbc, hstmt);
         return(FALSE);
         pDb->DispAllErrors(henv, hdbc, hstmt);
         return(FALSE);
-      }
-
+    }
+*/
     // Make sure the cursor is closed first
     // Make sure the cursor is closed first
-    if (! CloseCursor(hstmt))
-      return(FALSE);
+    if (!CloseCursor(hstmt))
+        return(FALSE);
 
     // Execute the SQL SELECT statement
     int retcode;     
 
     // Execute the SQL SELECT statement
     int retcode;     
-    retcode = SQLExecDirect(hstmt, (UCHAR FAR *) (queryType == DB_SELECT_STATEMENT ? pSqlStmt : sqlStmt), SQL_NTS);      
+    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)
     if (retcode != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO)
-      return(pDb->DispAllErrors(henv, hdbc, hstmt));
+        return(pDb->DispAllErrors(henv, hdbc, hstmt));
 
     // Completed successfully
     return(TRUE);
 
     // Completed successfully
     return(TRUE);
@@ -618,26 +694,50 @@ bool wxDbTable::query(int queryType, bool forUpdate, bool distinct, const char *
 
 
 /********** wxDbTable::Open() **********/
 
 
 /********** wxDbTable::Open() **********/
-bool wxDbTable::Open(void)
+bool wxDbTable::Open(bool checkPrivileges, bool checkTableExists)
 {
     if (!pDb)
         return FALSE;   
 {
     if (!pDb)
         return FALSE;   
+
     int i;
     wxString sqlStmt;
     int i;
     wxString sqlStmt;
+    wxString s;
 
 
+    s.Empty();
     // Verify that the table exists in the database
     // Verify that the table exists in the database
-    if (!pDb->TableExists(tableName,pDb->GetUsername(),tablePath))
+    if (checkTableExists && !pDb->TableExists(tableName, pDb->GetUsername(), tablePath))
     {
     {
-        wxString s;
-        if (wxStrcmp(tablePath,""))
-            s.sprintf(wxT("Error opening '%s/%s'.\n"),tablePath,tableName);
+        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
         else
-            s.sprintf(wxT("Error opening '%s'.\n"), tableName);
-        if (!pDb->TableExists(tableName,NULL,tablePath))
-            s += wxT("Table/view does not exist in the database.\n");
+            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
         else
-            s += wxT("Current logged in user does not have sufficient privileges to access this table.\n");
-        pDb->LogError(s.c_str());
+            p.Printf(wxT("Error opening '%s'.\n"), tableName.c_str());
+
+        p += s;
+        pDb->LogError(p.GetData());
+
         return(FALSE);
     }
 
         return(FALSE);
     }
 
@@ -645,21 +745,20 @@ bool wxDbTable::Open(void)
     // the wxDbTable object and the ODBC record.
     if (!queryOnly)
     {
     // the wxDbTable object and the ODBC record.
     if (!queryOnly)
     {
-
         if (!bindInsertParams())                    // Inserts
             return(FALSE);
        
         if (!bindUpdateParams())                    // Updates
             return(FALSE);
         if (!bindInsertParams())                    // Inserts
             return(FALSE);
        
         if (!bindUpdateParams())                    // Updates
             return(FALSE);
-       
     }
     }
+
     if (!bindCols(*hstmtDefault))                   // Selects
         return(FALSE);
     if (!bindCols(*hstmtDefault))                   // Selects
         return(FALSE);
-       
+    
     if (!bindCols(hstmtInternal))                   // Internal use only
         return(FALSE);
     if (!bindCols(hstmtInternal))                   // Internal use only
         return(FALSE);
-       
-    /*
+
+     /*
      * Do NOT bind the hstmtCount cursor!!!
      */
 
      * Do NOT bind the hstmtCount cursor!!!
      */
 
@@ -667,42 +766,40 @@ bool wxDbTable::Open(void)
     if (!queryOnly && noCols > 0)
     {
         bool needComma = FALSE;
     if (!queryOnly && noCols > 0)
     {
         bool needComma = FALSE;
-        sqlStmt.sprintf("INSERT INTO %s (", tableName);
+        sqlStmt.Printf(wxT("INSERT INTO %s ("), tableName.c_str());
         for (i = 0; i < noCols; i++)
         {
             if (! colDefs[i].InsertAllowed)
                 continue;
             if (needComma)
         for (i = 0; i < noCols; i++)
         {
             if (! colDefs[i].InsertAllowed)
                 continue;
             if (needComma)
-                sqlStmt += ",";
+                sqlStmt += wxT(",");
             sqlStmt += colDefs[i].ColName;
             needComma = TRUE;
         }
         needComma = FALSE;
             sqlStmt += colDefs[i].ColName;
             needComma = TRUE;
         }
         needComma = FALSE;
-        sqlStmt += ") VALUES (";
+        sqlStmt += wxT(") VALUES (");
 
 
-                 int insertableCount = 0;
+        int insertableCount = 0;
 
         for (i = 0; i < noCols; i++)
         {
             if (! colDefs[i].InsertAllowed)
                 continue;
             if (needComma)
 
         for (i = 0; i < noCols; i++)
         {
             if (! colDefs[i].InsertAllowed)
                 continue;
             if (needComma)
-                sqlStmt += ",";
-            sqlStmt += "?";
+                sqlStmt += wxT(",");
+            sqlStmt += wxT("?");
             needComma = TRUE;
             needComma = TRUE;
-                     insertableCount++;
+            insertableCount++;
         }
         }
-        sqlStmt += ")";
-
-//      pDb->WriteSqlLog(sqlStmt);
-
+        sqlStmt += wxT(")");
+        
         // Prepare the insert statement for execution
         if (insertableCount)  
         // 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));
         }
             if (SQLPrepare(hstmtInsert, (UCHAR FAR *) sqlStmt.c_str(), SQL_NTS) != SQL_SUCCESS)
                 return(pDb->DispAllErrors(henv, hdbc, hstmtInsert));
         }
-                 else 
+        else 
             insertable= FALSE;
     }
     
             insertable= FALSE;
     }
     
@@ -722,7 +819,7 @@ bool wxDbTable::Query(bool forUpdate, bool distinct)
 
 
 /********** wxDbTable::QueryBySqlStmt() **********/
 
 
 /********** wxDbTable::QueryBySqlStmt() **********/
-bool wxDbTable::QueryBySqlStmt(const char *pSqlStmt)
+bool wxDbTable::QueryBySqlStmt(const wxString &pSqlStmt)
 {
     pDb->WriteSqlLog(pSqlStmt);
 
 {
     pDb->WriteSqlLog(pSqlStmt);
 
@@ -759,6 +856,7 @@ bool wxDbTable::GetPrev(void)
     }
     else
         return(getRec(SQL_FETCH_PRIOR));
     }
     else
         return(getRec(SQL_FETCH_PRIOR));
+
 }  // wxDbTable::GetPrev()
 
 
 }  // wxDbTable::GetPrev()
 
 
@@ -772,6 +870,7 @@ bool wxDbTable::operator--(int)
     }
     else
         return(getRec(SQL_FETCH_PRIOR));
     }
     else
         return(getRec(SQL_FETCH_PRIOR));
+
 }  // wxDbTable::operator--
 
 
 }  // wxDbTable::operator--
 
 
@@ -785,6 +884,7 @@ bool wxDbTable::GetFirst(void)
     }
     else
         return(getRec(SQL_FETCH_FIRST));
     }
     else
         return(getRec(SQL_FETCH_FIRST));
+
 }  // wxDbTable::GetFirst()
 
 
 }  // wxDbTable::GetFirst()
 
 
@@ -798,22 +898,92 @@ bool wxDbTable::GetLast(void)
     }
     else 
         return(getRec(SQL_FETCH_LAST));
     }
     else 
         return(getRec(SQL_FETCH_LAST));
+
 }  // wxDbTable::GetLast()
 
 
 }  // wxDbTable::GetLast()
 
 
-/********** wxDbTable::BuildSelectStmt() **********/
-void wxDbTable::BuildSelectStmt(char *pSqlStmt, int typeOfSelect, bool distinct)
+/********** 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)
 {
 {
-    char whereClause[DB_MAX_WHERE_CLAUSE_LEN];
+    wxString tempSqlStmt;
+    BuildDeleteStmt(tempSqlStmt, typeOfDel, pWhereClause);
+    wxStrcpy(pSqlStmt, tempSqlStmt);
+}  // wxDbTable::BuildDeleteStmt()
 
 
-    whereClause[0] = 0;
+
+/********** wxDbTable::BuildSelectStmt() **********/
+void wxDbTable::BuildSelectStmt(wxString &pSqlStmt, int typeOfSelect, bool distinct)
+{
+    wxString whereClause;
+    whereClause.Empty();
 
     // Build a select statement to query the database
 
     // Build a select statement to query the database
-    wxStrcpy(pSqlStmt, "SELECT ");
+    pSqlStmt = wxT("SELECT ");
 
     // SELECT DISTINCT values only?
     if (distinct)
 
     // SELECT DISTINCT values only?
     if (distinct)
-        wxStrcat(pSqlStmt, "DISTINCT ");
+        pSqlStmt += wxT("DISTINCT ");
 
     // Was a FROM clause specified to join tables to the base table?
     // Available for ::Query() only!!!
 
     // Was a FROM clause specified to join tables to the base table?
     // Available for ::Query() only!!!
@@ -833,12 +1003,12 @@ void wxDbTable::BuildSelectStmt(char *pSqlStmt, int typeOfSelect, bool distinct)
         // If joining tables, the base table column names must be qualified to avoid ambiguity
         if (appendFromClause)
         {
         // If joining tables, the base table column names must be qualified to avoid ambiguity
         if (appendFromClause)
         {
-            wxStrcat(pSqlStmt, queryTableName);
-            wxStrcat(pSqlStmt, ".");
+            pSqlStmt += queryTableName;
+            pSqlStmt += wxT(".");
         }
         }
-        wxStrcat(pSqlStmt, colDefs[i].ColName);
+        pSqlStmt += colDefs[i].ColName;
         if (i + 1 < noCols)
         if (i + 1 < noCols)
-            wxStrcat(pSqlStmt, ",");
+            pSqlStmt += wxT(",");
     }
 
     // If the datasource supports ROWID, get this column as well.  Exception: Don't retrieve
     }
 
     // If the datasource supports ROWID, get this column as well.  Exception: Don't retrieve
@@ -848,17 +1018,17 @@ void wxDbTable::BuildSelectStmt(char *pSqlStmt, int typeOfSelect, bool distinct)
         // If joining tables, the base table column names must be qualified to avoid ambiguity
         if (appendFromClause)
         {
         // If joining tables, the base table column names must be qualified to avoid ambiguity
         if (appendFromClause)
         {
-            wxStrcat(pSqlStmt, ",");
-            wxStrcat(pSqlStmt, queryTableName);
-            wxStrcat(pSqlStmt, ".ROWID");
+            pSqlStmt += wxT(",");
+            pSqlStmt += queryTableName;
+            pSqlStmt += wxT(".ROWID");
         }
         else
         }
         else
-            wxStrcat(pSqlStmt, ",ROWID");
+            pSqlStmt += wxT(",ROWID");
     }
 
     // Append the FROM tablename portion
     }
 
     // Append the FROM tablename portion
-    wxStrcat(pSqlStmt, " FROM ");
-    wxStrcat(pSqlStmt, queryTableName);
+    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.
 
     // Sybase uses the HOLDLOCK keyword to lock a record during query.
     // The HOLDLOCK keyword follows the table name in the from clause.
@@ -866,62 +1036,224 @@ void wxDbTable::BuildSelectStmt(char *pSqlStmt, int typeOfSelect, bool distinct)
     // 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))
     // 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");
+        pSqlStmt += wxT(" HOLDLOCK");
 
     if (appendFromClause)
 
     if (appendFromClause)
-        wxStrcat(pSqlStmt, from);
+        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)
     {
 
     // 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:
+        case DB_SELECT_WHERE:
 #if wxODBC_BACKWARD_COMPATABILITY
 #if wxODBC_BACKWARD_COMPATABILITY
-        if (where && wxStrlen(where))   // May not want a where clause!!!
+            if (where && wxStrlen(where))   // May not want a where clause!!!
 #else
 #else
-        if (where.Length())   // May not want a where clause!!!
+            if (where.Length())   // May not want a where clause!!!
 #endif
 #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;
+    }
+
+    // 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");
+
+}  // wxDbTable::BuildSelectStmt()
+
+
+/***** 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()
+
+
+/********** 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.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)
         {
         {
-            wxStrcat(pSqlStmt, " WHERE ");
-            wxStrcat(pSqlStmt, where);
-        }
-        break;
-    case DB_SELECT_KEYFIELDS:
-        BuildWhereClause(whereClause, DB_WHERE_KEYFIELDS);
-        if (wxStrlen(whereClause))
-        {
-            wxStrcat(pSqlStmt, " WHERE ");
-            wxStrcat(pSqlStmt, whereClause);
+            if (! firstColumn)
+                pSqlStmt += wxT(",");
+            else
+                firstColumn = FALSE;
+            pSqlStmt += colDefs[i].ColName;
+            pSqlStmt += wxT(" = ?");
         }
         }
-        break;
-    case DB_SELECT_MATCHING:
-        BuildWhereClause(whereClause, DB_WHERE_MATCHING);
-        if (wxStrlen(whereClause))
+    }
+
+    // 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()
+
+
+/********** 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.
+ */
+{
+    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))))
         {
         {
-            wxStrcat(pSqlStmt, " WHERE ");
-            wxStrcat(pSqlStmt, whereClause);
+            // 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;
         }
         }
-        break;
-    }
-
-    // Append the ORDER BY clause
-#if wxODBC_BACKWARD_COMPATABILITY
-    if (orderBy && wxStrlen(orderBy))
-#else
-        if (orderBy.Length())
-#endif
-    {
-        wxStrcat(pSqlStmt, " ORDER BY ");
-        wxStrcat(pSqlStmt, orderBy);
     }
     }
+}  // wxDbTable::BuildWhereClause()
 
 
-    // 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");
 
 
-}  // wxDbTable::BuildSelectStmt()
+/***** DEPRECATED: use wxDbTable::BuildWhereClause(wxString &....) form *****/
+void wxDbTable::BuildWhereClause(wxChar *pWhereClause, int typeOfWhere,
+                                 const wxString &qualTableName, bool useLikeComparison)
+{
+    wxString tempSqlStmt;
+    BuildWhereClause(tempSqlStmt, typeOfWhere, qualTableName, useLikeComparison);
+    wxStrcpy(pWhereClause, tempSqlStmt);
+}  // wxDbTable::BuildWhereClause()
 
 
 /********** wxDbTable::GetRowNum() **********/
 
 
 /********** wxDbTable::GetRowNum() **********/
@@ -960,11 +1292,10 @@ bool wxDbTable::CreateTable(bool attemptDrop)
         return FALSE;
 
     int i, j;
         return FALSE;
 
     int i, j;
-//    char sqlStmt[DB_MAX_STATEMENT_LEN];
     wxString sqlStmt;
 
 #ifdef DBDEBUG_CONSOLE
     wxString sqlStmt;
 
 #ifdef DBDEBUG_CONSOLE
-    cout << "Creating Table " << tableName << "..." << endl;
+    cout << wxT("Creating Table ") << tableName << wxT("...") << endl;
 #endif
 
     // Drop table first
 #endif
 
     // Drop table first
@@ -978,11 +1309,11 @@ bool wxDbTable::CreateTable(bool attemptDrop)
         // Exclude derived columns since they are NOT part of the base table
         if (colDefs[i].DerivedCol)
             continue;
         // Exclude derived columns since they are NOT part of the base table
         if (colDefs[i].DerivedCol)
             continue;
-        cout << i + 1 << ": " << colDefs[i].ColName << "; ";
+        cout << i + 1 << wxT(": ") << colDefs[i].ColName << wxT("; ");
         switch(colDefs[i].DbDataType)
         {
             case DB_DATA_TYPE_VARCHAR:
         switch(colDefs[i].DbDataType)
         {
             case DB_DATA_TYPE_VARCHAR:
-                cout << pDb->typeInfVarchar.TypeName << "(" << colDefs[i].SzDataObj << ")";
+                cout << pDb->typeInfVarchar.TypeName << wxT("(") << colDefs[i].SzDataObj << wxT(")");
                 break;
             case DB_DATA_TYPE_INTEGER:
                 cout << pDb->typeInfInteger.TypeName;
                 break;
             case DB_DATA_TYPE_INTEGER:
                 cout << pDb->typeInfInteger.TypeName;
@@ -993,6 +1324,9 @@ bool wxDbTable::CreateTable(bool attemptDrop)
             case DB_DATA_TYPE_DATE:
                 cout << pDb->typeInfDate.TypeName;
                 break;
             case DB_DATA_TYPE_DATE:
                 cout << pDb->typeInfDate.TypeName;
                 break;
+            case DB_DATA_TYPE_BLOB:
+                cout << pDb->typeInfBlob.TypeName;
+                break;
         }
         cout << endl;
     }
         }
         cout << endl;
     }
@@ -1000,7 +1334,7 @@ bool wxDbTable::CreateTable(bool attemptDrop)
 
     // Build a CREATE TABLE string from the colDefs structure.
     bool needComma = FALSE;
 
     // Build a CREATE TABLE string from the colDefs structure.
     bool needComma = FALSE;
-    sqlStmt.sprintf("CREATE TABLE %s (", tableName);
+    sqlStmt.Printf(wxT("CREATE TABLE %s ("), tableName.c_str());
 
     for (i = 0; i < noCols; i++)
     {
 
     for (i = 0; i < noCols; i++)
     {
@@ -1009,38 +1343,46 @@ bool wxDbTable::CreateTable(bool attemptDrop)
             continue;
         // Comma Delimiter
         if (needComma)
             continue;
         // Comma Delimiter
         if (needComma)
-           sqlStmt += ",";
+            sqlStmt += wxT(",");
         // Column Name
         sqlStmt += colDefs[i].ColName;
         // Column Name
         sqlStmt += colDefs[i].ColName;
-        sqlStmt += " ";
+        sqlStmt += wxT(" ");
         // Column Type
         switch(colDefs[i].DbDataType)
         {
             case DB_DATA_TYPE_VARCHAR:
         // Column Type
         switch(colDefs[i].DbDataType)
         {
             case DB_DATA_TYPE_VARCHAR:
-                sqlStmt += pDb->GetTypeInfVarchar().TypeName; break;
+                sqlStmt += pDb->GetTypeInfVarchar().TypeName;
+                break;
             case DB_DATA_TYPE_INTEGER:
             case DB_DATA_TYPE_INTEGER:
-                sqlStmt += pDb->GetTypeInfInteger().TypeName; break;
+                sqlStmt += pDb->GetTypeInfInteger().TypeName;
+                break;
             case DB_DATA_TYPE_FLOAT:
             case DB_DATA_TYPE_FLOAT:
-                sqlStmt += pDb->GetTypeInfFloat().TypeName; break;
+                sqlStmt += pDb->GetTypeInfFloat().TypeName;
+                break;
             case DB_DATA_TYPE_DATE:
             case DB_DATA_TYPE_DATE:
-                sqlStmt += pDb->GetTypeInfDate().TypeName; break;
+                sqlStmt += pDb->GetTypeInfDate().TypeName;
+                break;
+            case DB_DATA_TYPE_BLOB:
+                sqlStmt += pDb->GetTypeInfBlob().TypeName;
+                break;
         }
         // For varchars, append the size of the string
         }
         // For varchars, append the size of the string
-        if (colDefs[i].DbDataType == DB_DATA_TYPE_VARCHAR)
+        if (colDefs[i].DbDataType == DB_DATA_TYPE_VARCHAR)// ||
+//            colDefs[i].DbDataType == DB_DATA_TYPE_BLOB)
         {
             wxString s;
         {
             wxString s;
-            // wxStrcat(sqlStmt, "(");
-            // wxStrcat(sqlStmt, itoa(colDefs[i].SzDataObj, s, 10));
-            // wxStrcat(sqlStmt, ")");
-            s.sprintf("(%d)", colDefs[i].SzDataObj);
-            sqlStmt += s.c_str();
+            s.Printf(wxT("(%d)"), colDefs[i].SzDataObj);
+            sqlStmt += s;
         }
 
         }
 
-        if (pDb->Dbms() == dbmsSYBASE_ASE || pDb->Dbms() == dbmsMY_SQL)
+        if (pDb->Dbms() == dbmsDB2 ||
+            pDb->Dbms() == dbmsMY_SQL ||
+            pDb->Dbms() == dbmsSYBASE_ASE  ||
+            pDb->Dbms() == dbmsMS_SQL_SERVER)
         {
             if (colDefs[i].KeyField)
             {
         {
             if (colDefs[i].KeyField)
             {
-                sqlStmt += " NOT NULL";
+                sqlStmt += wxT(" NOT NULL");
             }
         }
         
             }
         }
         
@@ -1057,16 +1399,23 @@ bool wxDbTable::CreateTable(bool attemptDrop)
     }
     if (j && pDb->Dbms() != dbmsDBASE)  // Found a keyfield
     {
     }
     if (j && pDb->Dbms() != dbmsDBASE)  // Found a keyfield
     {
-        if (pDb->Dbms() != dbmsMY_SQL)
-        {
-            sqlStmt += ",CONSTRAINT ";
-            sqlStmt += tableName;
-            sqlStmt += "_PIDX PRIMARY KEY (";
-        }
-        else
+        switch (pDb->Dbms())
         {
         {
-            /* MySQL goes out on this one. We also declare the relevant key NON NULL above */
-            sqlStmt += ", PRIMARY KEY (";
+            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 ");
+                sqlStmt += tableName;
+                sqlStmt += wxT("_PIDX PRIMARY KEY (");
+                break;
+            }
         }
 
         // List column name(s) of column(s) comprising the primary key
         }
 
         // List column name(s) of column(s) comprising the primary key
@@ -1075,16 +1424,24 @@ bool wxDbTable::CreateTable(bool attemptDrop)
             if (colDefs[i].KeyField)
             {
                 if (j++) // Multi part key, comma separate names
             if (colDefs[i].KeyField)
             {
                 if (j++) // Multi part key, comma separate names
-                    sqlStmt += ",";
+                    sqlStmt += wxT(",");
                 sqlStmt += colDefs[i].ColName;
             }
         }
                 sqlStmt += colDefs[i].ColName;
             }
         }
-       sqlStmt += ")";
+       sqlStmt += wxT(")");
+
+       if (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
     }
     // Append the closing parentheses for the create table statement
-    sqlStmt += ")";
+    sqlStmt += wxT(")");
 
 
-    pDb->WriteSqlLog(sqlStmt.c_str());
+    pDb->WriteSqlLog(sqlStmt);
 
 #ifdef DBDEBUG_CONSOLE
     cout << endl << sqlStmt.c_str() << endl;
 
 #ifdef DBDEBUG_CONSOLE
     cout << endl << sqlStmt.c_str() << endl;
@@ -1101,9 +1458,9 @@ bool wxDbTable::CreateTable(bool attemptDrop)
     }
 
     // Commit the transaction and close the cursor
     }
 
     // Commit the transaction and close the cursor
-    if (! pDb->CommitTrans())
+    if (!pDb->CommitTrans())
         return(FALSE);
         return(FALSE);
-    if (! CloseCursor(hstmt))
+    if (!CloseCursor(hstmt))
         return(FALSE);
 
     // Database table created successfully
         return(FALSE);
 
     // Database table created successfully
@@ -1122,9 +1479,9 @@ bool wxDbTable::DropTable()
 
     wxString sqlStmt;
 
 
     wxString sqlStmt;
 
-    sqlStmt.sprintf("DROP TABLE %s", tableName);
+    sqlStmt.Printf(wxT("DROP TABLE %s"), tableName.c_str());
 
 
-    pDb->WriteSqlLog(sqlStmt.c_str());
+    pDb->WriteSqlLog(sqlStmt);
 
 #ifdef DBDEBUG_CONSOLE
     cout << endl << sqlStmt.c_str() << endl;
 
 #ifdef DBDEBUG_CONSOLE
     cout << endl << sqlStmt.c_str() << endl;
@@ -1133,13 +1490,14 @@ bool wxDbTable::DropTable()
     if (SQLExecDirect(hstmt, (UCHAR FAR *) sqlStmt.c_str(), SQL_NTS) != SQL_SUCCESS)
     {
         // Check for "Base table not found" error and ignore
     if (SQLExecDirect(hstmt, (UCHAR FAR *) sqlStmt.c_str(), SQL_NTS) != SQL_SUCCESS)
     {
         // Check for "Base table not found" error and ignore
-        pDb->GetNextError(henv, hdbc, hstmt);  
-        if (wxStrcmp(pDb->sqlState,"S0002") && wxStrcmp(pDb->sqlState, "S1000"))  // "Base table not found" 
-        {       
+        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
             // Check for product specific error codes
-            if (!((pDb->Dbms() == dbmsSYBASE_ASA    && !wxStrcmp(pDb->sqlState,"42000"))   ||  // 5.x (and lower?)
-                 (pDb->Dbms() == dbmsSYBASE_ASE    && !wxStrcmp(pDb->sqlState,"37000"))   ||   
-                  (pDb->Dbms() == dbmsPOSTGRES      && !wxStrcmp(pDb->sqlState,"08S01"))))     
+            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() == dbmsPOSTGRES      && !wxStrcmp(pDb->sqlState,wxT("08S01")))))     
             {
                 pDb->DispNextError();
                 pDb->DispAllErrors(henv, hdbc, hstmt);
             {
                 pDb->DispNextError();
                 pDb->DispAllErrors(henv, hdbc, hstmt);
@@ -1161,26 +1519,82 @@ bool wxDbTable::DropTable()
 
 
 /********** wxDbTable::CreateIndex() **********/
 
 
 /********** wxDbTable::CreateIndex() **********/
-bool wxDbTable::CreateIndex(const char * idxName, bool unique, int noIdxCols, wxDbIdxDef *pIdxDefs, bool attemptDrop)
+bool wxDbTable::CreateIndex(const wxString &idxName, bool unique, UWORD noIdxCols,
+                                                                        wxDbIdxDef *pIdxDefs, bool attemptDrop)
 {
 {
-//    char sqlStmt[DB_MAX_STATEMENT_LEN];
     wxString sqlStmt;
 
     // Drop the index first
     if (attemptDrop && !DropIndex(idxName))
         return (FALSE);
 
     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
     // Build a CREATE INDEX statement
-    sqlStmt = "CREATE ";
+    sqlStmt = wxT("CREATE ");
     if (unique)
     if (unique)
-        sqlStmt += "UNIQUE ";
-
-    sqlStmt += "INDEX ";
+        sqlStmt += wxT("UNIQUE ");
+    
+    sqlStmt += wxT("INDEX ");
     sqlStmt += idxName;
     sqlStmt += idxName;
-    sqlStmt += " ON ";
+    sqlStmt += wxT(" ON ");
     sqlStmt += tableName;
     sqlStmt += tableName;
-    sqlStmt += " (";
-
+    sqlStmt += wxT(" (");
+    
     // Append list of columns making up index
     int i;
     for (i = 0; i < noIdxCols; i++)
     // Append list of columns making up index
     int i;
     for (i = 0; i < noIdxCols; i++)
@@ -1190,19 +1604,19 @@ bool wxDbTable::CreateIndex(const char * idxName, bool unique, int noIdxCols, wx
         if (pDb->Dbms() != dbmsPOSTGRES)
         {
             if (pIdxDefs[i].Ascending)
         if (pDb->Dbms() != dbmsPOSTGRES)
         {
             if (pIdxDefs[i].Ascending)
-                sqlStmt += " ASC";
+                sqlStmt += wxT(" ASC");
             else
             else
-                sqlStmt += " DESC";
+                sqlStmt += wxT(" DESC");
         }
 
         if ((i + 1) < noIdxCols)
         }
 
         if ((i + 1) < noIdxCols)
-            sqlStmt += ",";
+            sqlStmt += wxT(",");
     }
     
     // Append closing parentheses
     }
     
     // Append closing parentheses
-    sqlStmt += ")";
+    sqlStmt += wxT(")");
 
 
-    pDb->WriteSqlLog(sqlStmt.c_str());
+    pDb->WriteSqlLog(sqlStmt);
 
 #ifdef DBDEBUG_CONSOLE
     cout << endl << sqlStmt.c_str() << endl << endl;
 
 #ifdef DBDEBUG_CONSOLE
     cout << endl << sqlStmt.c_str() << endl << endl;
@@ -1230,7 +1644,7 @@ bool wxDbTable::CreateIndex(const char * idxName, bool unique, int noIdxCols, wx
 
 
 /********** wxDbTable::DropIndex() **********/
 
 
 /********** wxDbTable::DropIndex() **********/
-bool wxDbTable::DropIndex(const char * idxName)
+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
 {
     // NOTE: This function returns TRUE if the Index does not exist, but
     //       only for identified databases.  Code will need to be added
@@ -1239,14 +1653,15 @@ bool wxDbTable::DropIndex(const char * idxName)
 
     wxString sqlStmt;
 
 
     wxString sqlStmt;
 
-    if (pDb->Dbms() == dbmsACCESS)
-        sqlStmt.sprintf("DROP INDEX %s ON %s",idxName,tableName);
-    else if (pDb->Dbms() == dbmsSYBASE_ASE)
-        sqlStmt.sprintf("DROP INDEX %s.%s",tableName,idxName);
+    if (pDb->Dbms() == dbmsACCESS || pDb->Dbms() == dbmsMY_SQL)
+        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
     else
-        sqlStmt.sprintf("DROP INDEX %s",idxName);
+        sqlStmt.Printf(wxT("DROP INDEX %s"),idxName.c_str());
 
 
-    pDb->WriteSqlLog(sqlStmt.c_str());
+    pDb->WriteSqlLog(sqlStmt);
 
 #ifdef DBDEBUG_CONSOLE
     cout << endl << sqlStmt.c_str() << endl;
 
 #ifdef DBDEBUG_CONSOLE
     cout << endl << sqlStmt.c_str() << endl;
@@ -1256,16 +1671,16 @@ bool wxDbTable::DropIndex(const char * idxName)
     {
         // Check for "Index not found" error and ignore
         pDb->GetNextError(henv, hdbc, hstmt);
     {
         // Check for "Index not found" error and ignore
         pDb->GetNextError(henv, hdbc, hstmt);
-        if (wxStrcmp(pDb->sqlState,"S0012"))  // "Index not found"
+        if (wxStrcmp(pDb->sqlState,wxT("S0012")))  // "Index not found"
         {
             // Check for product specific error codes
         {
             // 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,"37000"))   ||
-               (pDb->Dbms() == dbmsMS_SQL_SERVER && !wxStrcmp(pDb->sqlState,"S1000"))   ||
-               (pDb->Dbms() == dbmsSYBASE_ASE    && !wxStrcmp(pDb->sqlState,"S0002")) ||  // Base table not found
-               (pDb->Dbms() == dbmsMY_SQL        && !wxStrcmp(pDb->sqlState,"42S02")) ||    // untested
-               (pDb->Dbms() == dbmsPOSTGRES      && !wxStrcmp(pDb->sqlState,"08S01"))
-               ))
+            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() == 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->DispNextError();
                 pDb->DispAllErrors(henv, hdbc, hstmt);
@@ -1286,10 +1701,46 @@ bool wxDbTable::DropIndex(const char * idxName)
 }  // wxDbTable::DropIndex()
 
 
 }  // 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)
 {
 /********** wxDbTable::Insert() **********/
 int wxDbTable::Insert(void)
 {
-    assert(!queryOnly);
+    wxASSERT(!queryOnly);
     if (queryOnly || !insertable)
         return(DB_FAILURE);
 
     if (queryOnly || !insertable)
         return(DB_FAILURE);
 
@@ -1302,7 +1753,7 @@ int wxDbTable::Insert(void)
     {
         // Check to see if integrity constraint was violated
         pDb->GetNextError(henv, hdbc, hstmtInsert);
     {
         // Check to see if integrity constraint was violated
         pDb->GetNextError(henv, hdbc, hstmtInsert);
-        if (! wxStrcmp(pDb->sqlState, "23000"))  // Integrity constraint violated
+        if (! wxStrcmp(pDb->sqlState, wxT("23000")))  // Integrity constraint violated
             return(DB_ERR_INTEGRITY_CONSTRAINT_VIOL);
         else
         {
             return(DB_ERR_INTEGRITY_CONSTRAINT_VIOL);
         else
         {
@@ -1321,11 +1772,11 @@ int wxDbTable::Insert(void)
 /********** wxDbTable::Update() **********/
 bool wxDbTable::Update(void)
 {
 /********** wxDbTable::Update() **********/
 bool wxDbTable::Update(void)
 {
-    assert(!queryOnly);
+    wxASSERT(!queryOnly);
     if (queryOnly)
         return(FALSE);
 
     if (queryOnly)
         return(FALSE);
 
-    char sqlStmt[DB_MAX_STATEMENT_LEN];
+    wxString sqlStmt;
 
     // Build the SQL UPDATE statement
     BuildUpdateStmt(sqlStmt, DB_UPD_KEYFIELDS);
 
     // Build the SQL UPDATE statement
     BuildUpdateStmt(sqlStmt, DB_UPD_KEYFIELDS);
@@ -1333,7 +1784,7 @@ bool wxDbTable::Update(void)
     pDb->WriteSqlLog(sqlStmt);
 
 #ifdef DBDEBUG_CONSOLE
     pDb->WriteSqlLog(sqlStmt);
 
 #ifdef DBDEBUG_CONSOLE
-    cout << endl << sqlStmt << endl << endl;
+    cout << endl << sqlStmt.c_str() << endl << endl;
 #endif
 
     // Execute the SQL UPDATE statement
 #endif
 
     // Execute the SQL UPDATE statement
@@ -1343,9 +1794,9 @@ bool wxDbTable::Update(void)
 
 
 /********** wxDbTable::Update(pSqlStmt) **********/
 
 
 /********** wxDbTable::Update(pSqlStmt) **********/
-bool wxDbTable::Update(const char *pSqlStmt)
+bool wxDbTable::Update(const wxString &pSqlStmt)
 {
 {
-    assert(!queryOnly);
+    wxASSERT(!queryOnly);
     if (queryOnly)
         return(FALSE);
 
     if (queryOnly)
         return(FALSE);
 
@@ -1357,13 +1808,13 @@ bool wxDbTable::Update(const char *pSqlStmt)
 
 
 /********** wxDbTable::UpdateWhere() **********/
 
 
 /********** wxDbTable::UpdateWhere() **********/
-bool wxDbTable::UpdateWhere(const char *pWhereClause)
+bool wxDbTable::UpdateWhere(const wxString &pWhereClause)
 {
 {
-    assert(!queryOnly);
+    wxASSERT(!queryOnly);
     if (queryOnly)
         return(FALSE);
 
     if (queryOnly)
         return(FALSE);
 
-    char sqlStmt[DB_MAX_STATEMENT_LEN];
+    wxString sqlStmt;
 
     // Build the SQL UPDATE statement
     BuildUpdateStmt(sqlStmt, DB_UPD_WHERE, pWhereClause);
 
     // Build the SQL UPDATE statement
     BuildUpdateStmt(sqlStmt, DB_UPD_WHERE, pWhereClause);
@@ -1371,7 +1822,7 @@ bool wxDbTable::UpdateWhere(const char *pWhereClause)
     pDb->WriteSqlLog(sqlStmt);
 
 #ifdef DBDEBUG_CONSOLE
     pDb->WriteSqlLog(sqlStmt);
 
 #ifdef DBDEBUG_CONSOLE
-    cout << endl << sqlStmt << endl << endl;
+    cout << endl << sqlStmt.c_str() << endl << endl;
 #endif
 
     // Execute the SQL UPDATE statement
 #endif
 
     // Execute the SQL UPDATE statement
@@ -1383,11 +1834,12 @@ bool wxDbTable::UpdateWhere(const char *pWhereClause)
 /********** wxDbTable::Delete() **********/
 bool wxDbTable::Delete(void)
 {
 /********** wxDbTable::Delete() **********/
 bool wxDbTable::Delete(void)
 {
-    assert(!queryOnly);
+    wxASSERT(!queryOnly);
     if (queryOnly)
         return(FALSE);
 
     if (queryOnly)
         return(FALSE);
 
-    char sqlStmt[DB_MAX_STATEMENT_LEN];
+    wxString sqlStmt;
+    sqlStmt.Empty();
 
     // Build the SQL DELETE statement
     BuildDeleteStmt(sqlStmt, DB_DEL_KEYFIELDS);
 
     // Build the SQL DELETE statement
     BuildDeleteStmt(sqlStmt, DB_DEL_KEYFIELDS);
@@ -1401,13 +1853,14 @@ bool wxDbTable::Delete(void)
 
 
 /********** wxDbTable::DeleteWhere() **********/
 
 
 /********** wxDbTable::DeleteWhere() **********/
-bool wxDbTable::DeleteWhere(const char *pWhereClause)
+bool wxDbTable::DeleteWhere(const wxString &pWhereClause)
 {
 {
-    assert(!queryOnly);
+    wxASSERT(!queryOnly);
     if (queryOnly)
         return(FALSE);
 
     if (queryOnly)
         return(FALSE);
 
-    char sqlStmt[DB_MAX_STATEMENT_LEN];
+    wxString sqlStmt;
+    sqlStmt.Empty();
 
     // Build the SQL DELETE statement
     BuildDeleteStmt(sqlStmt, DB_DEL_WHERE, pWhereClause);
 
     // Build the SQL DELETE statement
     BuildDeleteStmt(sqlStmt, DB_DEL_WHERE, pWhereClause);
@@ -1423,11 +1876,12 @@ bool wxDbTable::DeleteWhere(const char *pWhereClause)
 /********** wxDbTable::DeleteMatching() **********/
 bool wxDbTable::DeleteMatching(void)
 {
 /********** wxDbTable::DeleteMatching() **********/
 bool wxDbTable::DeleteMatching(void)
 {
-    assert(!queryOnly);
+    wxASSERT(!queryOnly);
     if (queryOnly)
         return(FALSE);
 
     if (queryOnly)
         return(FALSE);
 
-    char sqlStmt[DB_MAX_STATEMENT_LEN];
+    wxString sqlStmt;
+    sqlStmt.Empty();
 
     // Build the SQL DELETE statement
     BuildDeleteStmt(sqlStmt, DB_DEL_MATCHING);
 
     // Build the SQL DELETE statement
     BuildDeleteStmt(sqlStmt, DB_DEL_MATCHING);
@@ -1440,239 +1894,55 @@ bool wxDbTable::DeleteMatching(void)
 }  // wxDbTable::DeleteMatching()
 
 
 }  // wxDbTable::DeleteMatching()
 
 
-/********** wxDbTable::BuildUpdateStmt() **********/
-void wxDbTable::BuildUpdateStmt(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[wxDB_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, wxDB_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.
-        BuildWhereClause(whereClause, DB_WHERE_KEYFIELDS);
-        wxStrcat(pSqlStmt, whereClause);
-        break;
-    case DB_UPD_WHERE:
-        wxStrcat(pSqlStmt, pWhereClause);
-        break;
-    }
-}  // BuildUpdateStmt()
-
-
-/********** wxDbTable::BuildDeleteStmt() **********/
-void wxDbTable::BuildDeleteStmt(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[wxDB_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, wxDB_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.
-        BuildWhereClause(whereClause, DB_WHERE_KEYFIELDS);
-        wxStrcat(pSqlStmt, whereClause);
-        break;
-    case DB_DEL_WHERE:
-        wxStrcat(pSqlStmt, pWhereClause);
-        break;
-    case DB_DEL_MATCHING:
-        BuildWhereClause(whereClause, DB_WHERE_MATCHING);
-        wxStrcat(pSqlStmt, whereClause);
-        break;
-    }
-
-}  // BuildDeleteStmt()
-
-
-/********** wxDbTable::BuildWhereClause() **********/
-void wxDbTable::BuildWhereClause(char *pWhereClause, int typeOfWhere,
-                                 const char *qualTableName, bool useLikeComparison)
 /*
 /*
- * Note: BuildWhereClause() currently ignores timestamp columns.
- *       They are not included as part of the where clause.
- */
-{
-    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);
-            if (useLikeComparison && (colDefs[i].SqlCtype == SQL_C_CHAR))
-                wxStrcat(pWhereClause, " LIKE ");
-            else
-                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);
-        }
-    }
-}  // wxDbTable::BuildWhereClause()
+    This logic is just not right.  It would indicate TRUE
+    if a numeric field were set to a value of 0.
 
 
-
-/********** wxDbTable::IsColNull() **********/
-bool wxDbTable::IsColNull(int colNo)
-{
     switch(colDefs[colNo].SqlCtype)
     {
     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)
+        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(TRUE);
-        else
-            return(FALSE);
-    default:
-        return(TRUE);
     }
     }
+*/
+    return (colDefs[colNo].Null);
 }  // wxDbTable::IsColNull()
 
 
 /********** wxDbTable::CanSelectForUpdate() **********/
 bool wxDbTable::CanSelectForUpdate(void)
 {
 }  // wxDbTable::IsColNull()
 
 
 /********** wxDbTable::CanSelectForUpdate() **********/
 bool wxDbTable::CanSelectForUpdate(void)
 {
+    if (queryOnly)
+        return FALSE;
+
     if (pDb->Dbms() == dbmsMY_SQL)
         return FALSE;
 
     if (pDb->Dbms() == dbmsMY_SQL)
         return FALSE;
 
-    if (pDb->dbInf.posStmts & SQL_PS_SELECT_FOR_UPDATE)
+    if ((pDb->Dbms() == dbmsORACLE) ||
+        (pDb->dbInf.posStmts & SQL_PS_SELECT_FOR_UPDATE))
         return(TRUE);
     else
         return(FALSE);
         return(TRUE);
     else
         return(FALSE);
@@ -1688,12 +1958,12 @@ bool wxDbTable::CanUpdByROWID(void)
  *        as the ROWID is not getting updated correctly
  */
     return FALSE;
  *        as the ROWID is not getting updated correctly
  */
     return FALSE;
-
+/*
     if (pDb->Dbms() == dbmsORACLE)
         return(TRUE);
     else
         return(FALSE);
     if (pDb->Dbms() == dbmsORACLE)
         return(TRUE);
     else
         return(FALSE);
-
+*/
 }  // wxDbTable::CanUpdByROWID()
 
 
 }  // wxDbTable::CanUpdByROWID()
 
 
@@ -1708,39 +1978,38 @@ bool wxDbTable::IsCursorClosedOnCommit(void)
 }  // wxDbTable::IsCursorClosedOnCommit()
 
 
 }  // wxDbTable::IsCursorClosedOnCommit()
 
 
-/********** wxDbTable::ClearMemberVars() **********/
-void wxDbTable::ClearMemberVars(void)
+
+/********** wxDbTable::ClearMemberVar() **********/
+void wxDbTable::ClearMemberVar(UWORD colNo, bool setToNull)
 {
 {
-    // Loop through the columns setting each member variable to zero
-    int i;
-    for (i = 0; i < noCols; i++)
+    wxASSERT(colNo < noCols);
+
+    switch(colDefs[colNo].SqlCtype)
     {
     {
-        switch(colDefs[i].SqlCtype)
-        {
         case SQL_C_CHAR:
         case SQL_C_CHAR:
-            ((UCHAR FAR *) colDefs[i].PtrDataObj)[0]    = 0;
+            ((UCHAR FAR *) colDefs[colNo].PtrDataObj)[0]    = 0;
             break;
         case SQL_C_SSHORT:
             break;
         case SQL_C_SSHORT:
-            *((SWORD *) colDefs[i].PtrDataObj)          = 0;
+            *((SWORD *) colDefs[colNo].PtrDataObj)          = 0;
             break;
         case SQL_C_USHORT:
             break;
         case SQL_C_USHORT:
-            *((UWORD*) colDefs[i].PtrDataObj)           = 0;
+            *((UWORD*) colDefs[colNo].PtrDataObj)           = 0;
             break;
         case SQL_C_SLONG:
             break;
         case SQL_C_SLONG:
-            *((SDWORD *) colDefs[i].PtrDataObj)         = 0;
+            *((SDWORD *) colDefs[colNo].PtrDataObj)         = 0;
             break;
         case SQL_C_ULONG:
             break;
         case SQL_C_ULONG:
-            *((UDWORD *) colDefs[i].PtrDataObj)         = 0;
+            *((UDWORD *) colDefs[colNo].PtrDataObj)         = 0;
             break;
         case SQL_C_FLOAT:
             break;
         case SQL_C_FLOAT:
-            *((SFLOAT *) colDefs[i].PtrDataObj)         = 0.0f;
+            *((SFLOAT *) colDefs[colNo].PtrDataObj)         = 0.0f;
             break;
         case SQL_C_DOUBLE:
             break;
         case SQL_C_DOUBLE:
-            *((SDOUBLE *) colDefs[i].PtrDataObj)        = 0.0f;
+            *((SDOUBLE *) colDefs[colNo].PtrDataObj)        = 0.0f;
             break;
         case SQL_C_TIMESTAMP:
             TIMESTAMP_STRUCT *pDt;
             break;
         case SQL_C_TIMESTAMP:
             TIMESTAMP_STRUCT *pDt;
-            pDt = (TIMESTAMP_STRUCT *) colDefs[i].PtrDataObj;
+            pDt = (TIMESTAMP_STRUCT *) colDefs[colNo].PtrDataObj;
             pDt->year = 0;
             pDt->month = 0;
             pDt->day = 0;
             pDt->year = 0;
             pDt->month = 0;
             pDt->day = 0;
@@ -1749,10 +2018,22 @@ void wxDbTable::ClearMemberVars(void)
             pDt->second = 0;
             pDt->fraction = 0;
             break;
             pDt->second = 0;
             pDt->fraction = 0;
             break;
-       
-        }
     }
 
     }
 
+    if (setToNull)
+        SetColNull(colNo);
+}  // wxDbTable::ClearMemberVar()
+
+
+/********** wxDbTable::ClearMemberVars() **********/
+void wxDbTable::ClearMemberVars(bool setToNull)
+{
+    int i;
+
+    // Loop through the columns setting each member variable to zero
+    for (i=0; i < noCols; i++)
+        ClearMemberVar(i,setToNull);
+
 }  // wxDbTable::ClearMemberVars()
 
 
 }  // wxDbTable::ClearMemberVars()
 
 
@@ -1775,14 +2056,14 @@ bool wxDbTable::SetQueryTimeout(UDWORD nSeconds)
 
 
 /********** wxDbTable::SetColDefs() **********/
 
 
 /********** wxDbTable::SetColDefs() **********/
-void wxDbTable::SetColDefs (int index, const char *fieldName, int dataType, void *pData,
-                                 int cType, int size, bool keyField, bool upd,
-                                 bool insAllow, bool derivedCol)
+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 (!colDefs)  // May happen if the database connection fails
         return;
 
 {
     if (!colDefs)  // May happen if the database connection fails
         return;
 
-    if (wxStrlen(fieldName) > (unsigned int) DB_MAX_COLUMN_NAME_LEN)
+    if (fieldName.Length() > (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;
     {
         wxStrncpy (colDefs[index].ColName, fieldName, DB_MAX_COLUMN_NAME_LEN);
         colDefs[index].ColName[DB_MAX_COLUMN_NAME_LEN] = 0;
@@ -1813,16 +2094,15 @@ void wxDbTable::SetColDefs (int index, const char *fieldName, int dataType, void
 }  // wxDbTable::SetColDefs()
 
 
 }  // wxDbTable::SetColDefs()
 
 
-/********** wxDbTable::SetColDef() **********/
-wxDbColDataPtr* wxDbTable::SetColDefs (wxDbColInf *pColInfs, ULONG numCols)
+/********** wxDbTable::SetColDefs() **********/
+wxDbColDataPtr* wxDbTable::SetColDefs(wxDbColInf *pColInfs, UWORD numCols)
 {
 {
-    assert(pColInfs);
+    wxASSERT(pColInfs);
     wxDbColDataPtr *pColDataPtrs = NULL;
 
     if (pColInfs)
     {
     wxDbColDataPtr *pColDataPtrs = NULL;
 
     if (pColInfs)
     {
-        ULONG index;
-
+        UWORD index;
        
         pColDataPtrs = new wxDbColDataPtr[numCols+1];
 
        
         pColDataPtrs = new wxDbColDataPtr[numCols+1];
 
@@ -1832,14 +2112,11 @@ wxDbColDataPtr* wxDbTable::SetColDefs (wxDbColInf *pColInfs, ULONG numCols)
             switch (pColInfs[index].dbDataType)
             {
                 case DB_DATA_TYPE_VARCHAR:
             switch (pColInfs[index].dbDataType)
             {
                 case DB_DATA_TYPE_VARCHAR:
-                {
-                   pColDataPtrs[index].PtrDataObj = new char[pColInfs[index].bufferLength+1];
+                   pColDataPtrs[index].PtrDataObj = new wxChar[pColInfs[index].bufferLength+1];
                    pColDataPtrs[index].SzDataObj  = pColInfs[index].columnSize;
                    pColDataPtrs[index].SqlCtype   = SQL_C_CHAR;
                    break;
                    pColDataPtrs[index].SzDataObj  = pColInfs[index].columnSize;
                    pColDataPtrs[index].SqlCtype   = SQL_C_CHAR;
                    break;
-                }
                 case DB_DATA_TYPE_INTEGER:
                 case DB_DATA_TYPE_INTEGER:
-                {
                     // Can be long or short
                     if (pColInfs[index].bufferLength == sizeof(long))
                     {
                     // Can be long or short
                     if (pColInfs[index].bufferLength == sizeof(long))
                     {
@@ -1854,9 +2131,7 @@ wxDbColDataPtr* wxDbTable::SetColDefs (wxDbColInf *pColInfs, ULONG numCols)
                         pColDataPtrs[index].SqlCtype   = SQL_C_SSHORT;
                     }
                     break;
                         pColDataPtrs[index].SqlCtype   = SQL_C_SSHORT;
                     }
                     break;
-                }
                 case DB_DATA_TYPE_FLOAT:
                 case DB_DATA_TYPE_FLOAT:
-                {
                     // Can be float or double
                     if (pColInfs[index].bufferLength == sizeof(float))
                     {
                     // Can be float or double
                     if (pColInfs[index].bufferLength == sizeof(float))
                     {
@@ -1871,21 +2146,37 @@ wxDbColDataPtr* wxDbTable::SetColDefs (wxDbColInf *pColInfs, ULONG numCols)
                         pColDataPtrs[index].SqlCtype   = SQL_C_DOUBLE;
                     }  
                     break;
                         pColDataPtrs[index].SqlCtype   = SQL_C_DOUBLE;
                     }  
                     break;
-                }
                 case DB_DATA_TYPE_DATE:
                 case DB_DATA_TYPE_DATE:
-                {
                     pColDataPtrs[index].PtrDataObj = new TIMESTAMP_STRUCT;
                     pColDataPtrs[index].SzDataObj  = sizeof(TIMESTAMP_STRUCT);
                     pColDataPtrs[index].SqlCtype   = SQL_C_TIMESTAMP;
                     break;
                     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;
             }
             }
-
-         SetColDefs (index,pColInfs[index].colName,pColInfs[index].dbDataType, pColDataPtrs[index].PtrDataObj, pColDataPtrs[index].SqlCtype, pColDataPtrs[index].SzDataObj);
         }
     }
         }
     }
+
     return (pColDataPtrs);
     return (pColDataPtrs);
-} // wxDbTable::SetColDef()
+
+} // wxDbTable::SetColDefs()
 
 
 /********** wxDbTable::SetCursor() **********/
 
 
 /********** wxDbTable::SetCursor() **********/
@@ -1899,17 +2190,17 @@ void wxDbTable::SetCursor(HSTMT *hstmtActivate)
 }  // wxDbTable::SetCursor()
 
 
 }  // wxDbTable::SetCursor()
 
 
-/********** wxDbTable::Count(const char *) **********/
-ULONG wxDbTable::Count(const char *args)
+/********** wxDbTable::Count(const wxString &) **********/
+ULONG wxDbTable::Count(const wxString &args)
 {
 {
-    ULONG l;
+    ULONG count;
     wxString sqlStmt;
     SDWORD cb;
 
     // Build a "SELECT COUNT(*) FROM queryTableName [WHERE whereClause]" SQL Statement
     wxString sqlStmt;
     SDWORD cb;
 
     // Build a "SELECT COUNT(*) FROM queryTableName [WHERE whereClause]" SQL Statement
-    sqlStmt  = "SELECT COUNT(";
+    sqlStmt  = wxT("SELECT COUNT(");
     sqlStmt += args;
     sqlStmt += args;
-    sqlStmt += ") FROM ";
+    sqlStmt += wxT(") FROM ");
     sqlStmt += queryTableName;
 #if wxODBC_BACKWARD_COMPATABILITY
     if (from && wxStrlen(from))
     sqlStmt += queryTableName;
 #if wxODBC_BACKWARD_COMPATABILITY
     if (from && wxStrlen(from))
@@ -1925,17 +2216,17 @@ ULONG wxDbTable::Count(const char *args)
     if (where.Length())
 #endif
     {
     if (where.Length())
 #endif
     {
-        sqlStmt += " WHERE ";
+        sqlStmt += wxT(" WHERE ");
         sqlStmt += where;
     }
 
         sqlStmt += where;
     }
 
-    pDb->WriteSqlLog(sqlStmt.c_str());
+    pDb->WriteSqlLog(sqlStmt);
 
     // Initialize the Count cursor if it's not already initialized
     if (!hstmtCount)
     {
         hstmtCount = GetNewCursor(FALSE,FALSE);
 
     // Initialize the Count cursor if it's not already initialized
     if (!hstmtCount)
     {
         hstmtCount = GetNewCursor(FALSE,FALSE);
-        assert(hstmtCount);
+        wxASSERT(hstmtCount);
         if (!hstmtCount)
             return(0);
     }
         if (!hstmtCount)
             return(0);
     }
@@ -1955,7 +2246,7 @@ ULONG wxDbTable::Count(const char *args)
     }
 
     // Obtain the result
     }
 
     // Obtain the result
-    if (SQLGetData(*hstmtCount, 1, SQL_C_ULONG, &l, sizeof(l), &cb) != SQL_SUCCESS)
+    if (SQLGetData(*hstmtCount, (UWORD)1, SQL_C_ULONG, &count, sizeof(count), &cb) != SQL_SUCCESS)
     {
         pDb->DispAllErrors(henv, hdbc, *hstmtCount);
         return(0);
     {
         pDb->DispAllErrors(henv, hdbc, *hstmtCount);
         return(0);
@@ -1966,7 +2257,7 @@ ULONG wxDbTable::Count(const char *args)
         pDb->DispAllErrors(henv, hdbc, *hstmtCount);
 
     // Return the record count
         pDb->DispAllErrors(henv, hdbc, *hstmtCount);
 
     // Return the record count
-    return(l);
+    return(count);
 
 }  // wxDbTable::Count()
 
 
 }  // wxDbTable::Count()
 
@@ -1989,22 +2280,23 @@ bool wxDbTable::Refresh(void)
 #endif
     // Build a where clause to refetch the record with.  Try and use the
     // ROWID if it's available, ow use the key fields.
 #endif
     // 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, "");
+    wxString whereClause;
+    whereClause.Empty();
+
     if (CanUpdByROWID())
     {
         SDWORD cb;
     if (CanUpdByROWID())
     {
         SDWORD cb;
-        char   rowid[wxDB_ROWID_LEN+1];
+        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.
 
         // 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, wxDB_ROWID_LEN, &cb) == SQL_SUCCESS)
+        if (SQLGetData(hstmt, (UWORD)(noCols+1), SQL_C_CHAR, (UCHAR*) rowid, wxDB_ROWID_LEN, &cb) == SQL_SUCCESS)
         {
         {
-            wxStrcat(whereClause, queryTableName);
-            wxStrcat(whereClause, ".ROWID = '");
-            wxStrcat(whereClause, rowid);
-            wxStrcat(whereClause, "'");
+            whereClause += queryTableName;
+            whereClause += wxT(".ROWID = '");
+            whereClause += rowid;
+            whereClause += wxT("'");
         }
     }
 
         }
     }
 
@@ -2014,7 +2306,7 @@ bool wxDbTable::Refresh(void)
 
     // Requery the record
     where = whereClause;
 
     // Requery the record
     where = whereClause;
-    orderBy = "";
+    orderBy.Empty();
     if (!Query())
         result = FALSE;
 
     if (!Query())
         result = FALSE;
 
@@ -2037,19 +2329,24 @@ bool wxDbTable::Refresh(void)
 }  // wxDbTable::Refresh()
 
 
 }  // wxDbTable::Refresh()
 
 
-/********** wxDbTable::SetNull(int colNo) **********/
-bool wxDbTable::SetNull(int colNo)
+/********** wxDbTable::SetColNull() **********/
+bool wxDbTable::SetColNull(UWORD colNo, bool set)
 {
     if (colNo < noCols)
 {
     if (colNo < noCols)
-        return(colDefs[colNo].Null = TRUE);
+    {
+        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);
 
     else
         return(FALSE);
 
-}  // wxDbTable::SetNull(int colNo)
+}  // wxDbTable::SetColNull()
 
 
 
 
-/********** wxDbTable::SetNull(char *colName) **********/
-bool wxDbTable::SetNull(const char *colName)
+/********** wxDbTable::SetColNull() **********/
+bool wxDbTable::SetColNull(const wxString &colName, bool set)
 {
     int i;
     for (i = 0; i < noCols; i++)
 {
     int i;
     for (i = 0; i < noCols; i++)
@@ -2059,18 +2356,23 @@ bool wxDbTable::SetNull(const char *colName)
     }
 
     if (i < noCols)
     }
 
     if (i < noCols)
-        return(colDefs[i].Null = TRUE);
+    {
+        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);
 
     else
         return(FALSE);
 
-}  // wxDbTable::SetNull(char *colName)
+}  // wxDbTable::SetColNull()
 
 
 /********** wxDbTable::GetNewCursor() **********/
 HSTMT *wxDbTable::GetNewCursor(bool setCursor, bool bindColumns)
 {
     HSTMT *newHSTMT = new HSTMT;
 
 
 /********** wxDbTable::GetNewCursor() **********/
 HSTMT *wxDbTable::GetNewCursor(bool setCursor, bool bindColumns)
 {
     HSTMT *newHSTMT = new HSTMT;
-    assert(newHSTMT);
+    wxASSERT(newHSTMT);
     if (!newHSTMT)
         return(0);
 
     if (!newHSTMT)
         return(0);
 
@@ -2113,6 +2415,11 @@ bool wxDbTable::DeleteCursor(HSTMT *hstmtDel)
     if (!hstmtDel)  // Cursor already deleted
         return(result);
 
     if (!hstmtDel)  // Cursor already deleted
         return(result);
 
+/*
+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);
     if (SQLFreeStmt(*hstmtDel, SQL_DROP) != SQL_SUCCESS)
     {
         pDb->DispAllErrors(henv, hdbc);
wxWidgets (Impactor)