-- (void)executeSQL:(NSString *)format, ... NS_FORMAT_FUNCTION(1, 2);
-- (void)executeSQL:(NSString *)format arguments:(va_list)args NS_FORMAT_FUNCTION(1, 0);
+- (BOOL)executeSQL:(NSString *)format, ... NS_FORMAT_FUNCTION(1, 2);
+- (BOOL)executeSQL:(NSString *)format arguments:(va_list)args NS_FORMAT_FUNCTION(1, 0);