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root/public/ibx/branches/udr/client/FBSQLData.pas

Comparing ibx/trunk/fbintf/client/FBSQLData.pas (file contents):
Revision 263 by tony, Thu Dec 6 15:55:01 2018 UTC vs.
Revision 309 by tony, Tue Jul 21 08:00:42 2020 UTC

#	Line 76 | Line 76 | unit FBSQLData;
76		methods are needed for SQL parameters only. The string getters and setters
77		are virtual as SQLVar and Array encodings of string data is different.}
78
79	–	{ Note on SQL Parameter Names
80	–	--------------------------------------------
81	–
82	–	IBX processes parameter names case insensitive. This does result in some additional
83	–	overhead due to a call to "AnsiUpperCase". This can be avoided by undefining
84	–	"UseCaseInSensitiveParamName" below.
85	–
86	–	}
87	–	{$define UseCaseInSensitiveParamName}
79
80		interface
81
82		uses
83	<	Classes, SysUtils, IBExternals, IBHeader, IB,  FBActivityMonitor, FBClientAPI;
83	>	Classes, SysUtils, IBExternals, IBHeader, {$IFDEF WINDOWS} Windows, {$ENDIF} IB,  FBActivityMonitor, FBClientAPI;
84
85		type
86
#	Line 101 | Line 92 | type
92		function AdjustScale(Value: Int64; aScale: Integer): Double;
93		function AdjustScaleToInt64(Value: Int64; aScale: Integer): Int64;
94		function AdjustScaleToCurrency(Value: Int64; aScale: Integer): Currency;
95	+	function GetTimestampFormatStr: AnsiString;
96	+	function GetDateFormatStr(IncludeTime: boolean): AnsiString;
97	+	function GetTimeFormatStr: AnsiString;
98		procedure SetAsInteger(AValue: Integer);
99		protected
100		function AdjustScaleFromCurrency(Value: Currency; aScale: Integer): Int64;
#	Line 125 | Line 119 | type
119		function GetSQLType: cardinal; virtual; abstract;
120		function GetSQLTypeName: AnsiString; overload;
121		class function GetSQLTypeName(SQLType: short): AnsiString; overload;
122	+	function GetStrDataLength: short;
123		function GetName: AnsiString; virtual; abstract;
124		function GetScale: integer; virtual; abstract;
125		function GetAsBoolean: boolean;
#	Line 142 | Line 137 | type
137		function GetIsNullable: boolean; virtual;
138		function GetAsVariant: Variant;
139		function GetModified: boolean; virtual;
140	+	function GetDateTimeStrLength(DateTimeFormat: TIBDateTimeFormats): integer;
141	+	function GetSize: cardinal; virtual; abstract;
142	+	function GetCharSetWidth: integer; virtual; abstract;
143		procedure SetAsBoolean(AValue: boolean); virtual;
144		procedure SetAsCurrency(Value: Currency); virtual;
145		procedure SetAsInt64(Value: Int64); virtual;
#	Line 190 | Line 188 | type
188
189		TSQLDataArea = class
190		private
191	+	FCaseSensitiveParams: boolean;
192		function GetColumn(index: integer): TSQLVarData;
193		function GetCount: integer;
194		protected
#	Line 212 | Line 211 | type
211		var data: PByte); virtual;
212		procedure RowChange;
213		function StateChanged(var ChangeSeqNo: integer): boolean; virtual; abstract;
214	+	property CaseSensitiveParams: boolean read FCaseSensitiveParams
215	+	write FCaseSensitiveParams; {Only used when IsInputDataArea true}
216		property Count: integer read GetCount;
217		property Column[index: integer]: TSQLVarData read GetColumn;
218		property UniqueRelationName: AnsiString read FUniqueRelationName;
#	Line 241 | Line 242 | type
242		function GetRelationName: AnsiString;  virtual; abstract;
243		function GetScale: integer; virtual; abstract;
244		function GetCharSetID: cardinal; virtual; abstract;
245	+	function GetCharSetWidth: integer; virtual; abstract;
246		function GetCodePage: TSystemCodePage; virtual; abstract;
247		function GetIsNull: Boolean;   virtual; abstract;
248		function GetIsNullable: boolean; virtual; abstract;
#	Line 294 | Line 296 | type
296		FIBXSQLVAR: TSQLVarData;
297		FOwner: IUnknown;         {Keep reference to ensure Metadata/statement not discarded}
298		FPrepareSeqNo: integer;
297	–	FStatement: IStatement;
299		FChangeSeqNo: integer;
300		protected
301		procedure CheckActive; override;
#	Line 306 | Line 307 | type
307		constructor Create(aOwner: IUnknown; aIBXSQLVAR: TSQLVarData);
308		destructor Destroy; override;
309		function GetSQLDialect: integer; override;
309	–	property Statement: IStatement read FStatement;
310
311		public
312		{IColumnMetaData}
#	Line 321 | Line 321 | type
321		function GetScale: integer; override;
322		function getCharSetID: cardinal; override;
323		function GetIsNullable: boolean; override;
324	<	function GetSize: cardinal;
324	>	function GetSize: cardinal; override;
325	>	function GetCharSetWidth: integer; override;
326		function GetArrayMetaData: IArrayMetaData;
327		function GetBlobMetaData: IBlobMetaData;
328	+	function GetStatement: IStatement;
329	+	function GetTransaction: ITransaction; virtual;
330		property Name: AnsiString read GetName;
331		property Size: cardinal read GetSize;
332		property CharSetID: cardinal read getCharSetID;
333		property SQLSubtype: integer read getSubtype;
334		property IsNullable: Boolean read GetIsNullable;
335	+	public
336	+	property Statement: IStatement read GetStatement;
337		end;
338
339		{ TIBSQLData }
340
341		TIBSQLData = class(TColumnMetaData,ISQLData)
342	+	private
343	+	FTransaction: ITransaction;
344		protected
345		procedure CheckActive; override;
346		public
347	+	function GetTransaction: ITransaction; override;
348		function GetIsNull: Boolean; override;
349		function GetAsArray: IArray;
350		function GetAsBlob: IBlob; overload;
#	Line 423 | Line 431 | type
431		function getSQLParam(index: integer): ISQLParam;
432		function ByName(Idx: AnsiString): ISQLParam ;
433		function GetModified: Boolean;
434	+	function GetHasCaseSensitiveParams: Boolean;
435		end;
436
437		{ TResults }
#	Line 444 | Line 453 | type
453		function ByName(Idx: AnsiString): ISQLData;
454		function getSQLData(index: integer): ISQLData;
455		procedure GetData(index: integer; var IsNull:boolean; var len: short; var data: PByte);
456	+	function GetStatement: IStatement;
457		function GetTransaction: ITransaction; virtual;
458		procedure SetRetainInterfaces(aValue: boolean);
459		end;
460
461		implementation
462
463	<	uses FBMessages, variants, IBUtils, FBTransaction;
454	<
455	<	type
456	<
457	<	{ TSQLParamProcessor }
458	<
459	<	TSQLParamProcessor = class(TSQLwithNamedParamsTokeniser)
460	<	private
461	<	const
462	<	sIBXParam = 'IBXParam';  {do not localize}
463	<	private
464	<	FInString: AnsiString;
465	<	FIndex: integer;
466	<	function DoExecute(GenerateParamNames: boolean;
467	<	var slNames: TStrings): AnsiString;
468	<	protected
469	<	function GetChar: AnsiChar; override;
470	<	public
471	<	class function Execute(sSQL: AnsiString; GenerateParamNames: boolean;
472	<	var slNames: TStrings): AnsiString;
473	<	end;
474	<
475	<	{ TSQLParamProcessor }
476	<
477	<	function TSQLParamProcessor.DoExecute(GenerateParamNames: boolean;
478	<	var slNames: TStrings): AnsiString;
479	<	var token: TSQLTokens;
480	<	iParamSuffix: Integer;
481	<	begin
482	<	Result := '';
483	<	iParamSuffix := 0;
484	<
485	<	while not EOF do
486	<	begin
487	<	token := GetNextToken;
488	<	case token of
489	<	sqltParam,
490	<	sqltQuotedParam:
491	<	begin
492	<	Result := Result + '?';
493	<	slNames.Add(TokenText);
494	<	end;
495	<
496	<	sqltPlaceHolder:
497	<	if GenerateParamNames then
498	<	begin
499	<	Inc(iParamSuffix);
500	<	slNames.AddObject(sIBXParam + IntToStr(iParamSuffix),self); //Note local convention
501	<	//add pointer to self to mark entry
502	<	Result := Result + '?';
503	<	end
504	<	else
505	<	IBError(ibxeSQLParseError, [SParamNameExpected]);
506	<
507	<	sqltQuotedString:
508	<	Result := Result + '''' + SQLSafeString(TokenText) + '''';
509	<
510	<	sqltIdentifierInDoubleQuotes:
511	<	Result := Result + '"' + StringReplace(TokenText,'"','""',[rfReplaceAll]) + '"';
512	<
513	<	sqltComment:
514	<	Result := Result + '/*' + TokenText + '*/';
515	<
516	<	sqltCommentLine:
517	<	Result := Result + '//' + TokenText + LineEnding;
518	<
519	<	sqltEOL:
520	<	Result := Result + LineEnding;
521	<
522	<	else
523	<	Result := Result + TokenText;
524	<	end;
525	<	end;
526	<	end;
527	<
528	<	function TSQLParamProcessor.GetChar: AnsiChar;
529	<	begin
530	<	if FIndex <= Length(FInString) then
531	<	begin
532	<	Result := FInString[FIndex];
533	<	Inc(FIndex);
534	<	end
535	<	else
536	<	Result := #0;
537	<	end;
538	<
539	<	class function TSQLParamProcessor.Execute(sSQL: AnsiString;
540	<	GenerateParamNames: boolean; var slNames: TStrings): AnsiString;
541	<	begin
542	<	with self.Create do
543	<	try
544	<	FInString := sSQL;
545	<	FIndex := 1;
546	<	Result := DoExecute(GenerateParamNames,slNames);
547	<	finally
548	<	Free;
549	<	end;
550	<	end;
551	<
463	>	uses FBMessages, variants, IBUtils, FBTransaction, DateUtils;
464
465		{ TSQLDataArea }
466
#	Line 654 | Line 566 | var
566		s: AnsiString;
567		i: Integer;
568		begin
569	<	{$ifdef UseCaseInSensitiveParamName}
570	<	s := AnsiUpperCase(Idx);
571	<	{$else}
569	>	if not IsInputDataArea or not CaseSensitiveParams then
570	>	s := AnsiUpperCase(Idx)
571	>	else
572		s := Idx;
573	<	{$endif}
573	>
574		for i := 0 to Count - 1 do
575		if Column[i].Name = s then
576		begin
#	Line 690 | Line 602 | end;
602
603		procedure TSQLVarData.SetName(AValue: AnsiString);
604		begin
605	<	if FName = AValue then Exit;
694	<	{$ifdef UseCaseInSensitiveParamName}
695	<	if Parent.IsInputDataArea then
605	>	if not Parent.IsInputDataArea or not Parent.CaseSensitiveParams then
606		FName := AnsiUpperCase(AValue)
607		else
698	–	{$endif}
608		FName := AValue;
609		end;
610
#	Line 716 | Line 625 | begin
625
626		FVarString := aValue;
627		SQLType := SQL_TEXT;
628	+	Scale := 0;
629		SetSQLData(PByte(PAnsiChar(FVarString)),Length(aValue));
630		end;
631
#	Line 876 | Line 786 | begin
786		result := Value;
787		end;
788
789	+	function TSQLDataItem.GetDateFormatStr(IncludeTime: boolean): AnsiString;
790	+	begin
791	+	{$IF declared(DefaultFormatSettings)}
792	+	with DefaultFormatSettings do
793	+	{$ELSE}
794	+	{$IF declared(FormatSettings)}
795	+	with FormatSettings do
796	+	{$IFEND}
797	+	{$IFEND}
798	+	case GetSQLDialect of
799	+	1:
800	+	if IncludeTime then
801	+	result := ShortDateFormat + ' ' + LongTimeFormat
802	+	else
803	+	result := ShortDateFormat;
804	+	3:
805	+	result := ShortDateFormat;
806	+	end;
807	+	end;
808	+
809	+	function TSQLDataItem.GetTimeFormatStr: AnsiString;
810	+	begin
811	+	{$IF declared(DefaultFormatSettings)}
812	+	with DefaultFormatSettings do
813	+	{$ELSE}
814	+	{$IF declared(FormatSettings)}
815	+	with FormatSettings do
816	+	{$IFEND}
817	+	{$IFEND}
818	+	Result := LongTimeFormat;
819	+	end;
820	+
821	+	function TSQLDataItem.GetTimestampFormatStr: AnsiString;
822	+	begin
823	+	{$IF declared(DefaultFormatSettings)}
824	+	with DefaultFormatSettings do
825	+	{$ELSE}
826	+	{$IF declared(FormatSettings)}
827	+	with FormatSettings do
828	+	{$IFEND}
829	+	{$IFEND}
830	+	Result := ShortDateFormat + ' ' +  LongTimeFormat + '.zzz';
831	+	end;
832	+
833		procedure TSQLDataItem.SetAsInteger(AValue: Integer);
834		begin
835		SetAsLong(aValue);
#	Line 1006 | Line 960 | begin
960		end;
961		end;
962
963	+	function TSQLDataItem.GetStrDataLength: short;
964	+	begin
965	+	with FFirebirdClientAPI do
966	+	if SQLType = SQL_VARYING then
967	+	Result := DecodeInteger(SQLData, 2)
968	+	else
969	+	Result := DataLength;
970	+	end;
971	+
972		function TSQLDataItem.GetAsBoolean: boolean;
973		begin
974		CheckActive;
#	Line 1215 | Line 1178 | begin
1178		end;
1179		end;
1180
1181	+	{Copied from LazUTF8}
1182	+
1183	+	function UTF8CodepointSizeFull(p: PAnsiChar): integer;
1184	+	const TopBitSetMask   = $80; {%10000000}
1185	+	Top2BitsSetMask = $C0; {%11000000}
1186	+	Top3BitsSetMask = $E0; {%11100000}
1187	+	Top4BitsSetMask = $F0; {%11110000}
1188	+	Top5BitsSetMask = $F8; {%11111000}
1189	+	begin
1190	+	case p^ of
1191	+	#0..#191: // %11000000
1192	+	// regular single byte character (#0 is a character, this is Pascal ;)
1193	+	Result:=1;
1194	+	#192..#223: // p^ and %11100000 = %11000000
1195	+	begin
1196	+	// could be 2 byte character
1197	+	if (ord(p[1]) and Top2BitsSetMask) = TopBitSetMask then
1198	+	Result:=2
1199	+	else
1200	+	Result:=1;
1201	+	end;
1202	+	#224..#239: // p^ and %11110000 = %11100000
1203	+	begin
1204	+	// could be 3 byte character
1205	+	if ((ord(p[1]) and Top2BitsSetMask) = TopBitSetMask)
1206	+	and ((ord(p[2]) and Top2BitsSetMask) = TopBitSetMask) then
1207	+	Result:=3
1208	+	else
1209	+	Result:=1;
1210	+	end;
1211	+	#240..#247: // p^ and %11111000 = %11110000
1212	+	begin
1213	+	// could be 4 byte character
1214	+	if ((ord(p[1]) and Top2BitsSetMask) = TopBitSetMask)
1215	+	and ((ord(p[2]) and Top2BitsSetMask) = TopBitSetMask)
1216	+	and ((ord(p[3]) and Top2BitsSetMask) = TopBitSetMask) then
1217	+	Result:=4
1218	+	else
1219	+	Result:=1;
1220	+	end;
1221	+	else
1222	+	Result:=1;
1223	+	end;
1224	+	end;
1225	+
1226	+	{Returns the byte length of a UTF8 string with a fixed charwidth}
1227	+
1228	+	function GetStrLen(p: PAnsiChar; CharWidth, MaxDataLength: cardinal): integer;
1229	+	var i: integer;
1230	+	cplen: integer;
1231	+	s: AnsiString;
1232	+	begin
1233	+	Result := 0;
1234	+	s := strpas(p);
1235	+	for i := 1 to CharWidth do
1236	+	begin
1237	+	cplen := UTF8CodepointSizeFull(p);
1238	+	Inc(p,cplen);
1239	+	Inc(Result,cplen);
1240	+	if Result >= MaxDataLength then
1241	+	begin
1242	+	Result := MaxDataLength;
1243	+	Exit;
1244	+	end;
1245	+	end;
1246	+	end;
1247
1248		function TSQLDataItem.GetAsString: AnsiString;
1249		var
#	Line 1238 | Line 1267 | begin
1267		begin
1268		sz := SQLData;
1269		if (SQLType = SQL_TEXT) then
1270	<	str_len := DataLength
1270	>	begin
1271	>	if GetCodePage = cp_utf8 then
1272	>	str_len := GetStrLen(PAnsiChar(sz),GetSize div GetCharSetWidth,DataLength)
1273	>	else
1274	>	str_len := DataLength
1275	>	end
1276		else begin
1277	<	str_len := DecodeInteger(SQLData, 2);
1277	>	str_len := DecodeInteger(sz, 2);
1278		Inc(sz, 2);
1279		end;
1280		SetString(rs, PAnsiChar(sz), str_len);
1281		SetCodePage(rs,GetCodePage,false);
1282	<	if (SQLType = SQL_TEXT) and (GetCharSetID <> 1) then
1249	<	Result := TrimRight(rs)
1250	<	else
1251	<	Result := rs
1282	>	Result := rs;
1283		end;
1284		SQL_TYPE_DATE:
1285	<	case GetSQLDialect of
1255	<	1 : result := DateTimeToStr(AsDateTime);
1256	<	3 : result := DateToStr(AsDateTime);
1257	<	end;
1285	>	result := FormatDateTime(GetDateFormatStr(TimeOf(AsDateTime)<>0),AsDateTime);
1286		SQL_TYPE_TIME :
1287	<	result := TimeToStr(AsDateTime);
1287	>	result := FormatDateTime(GetTimeFormatStr,AsDateTime);
1288		SQL_TIMESTAMP:
1289	<	{$IF declared(DefaultFormatSettings)}
1262	<	with DefaultFormatSettings do
1263	<	{$ELSE}
1264	<	{$IF declared(FormatSettings)}
1265	<	with FormatSettings do
1266	<	{$IFEND}
1267	<	{$IFEND}
1268	<	result := FormatDateTime(ShortDateFormat + ' ' +
1269	<	LongTimeFormat+'.zzz',AsDateTime);
1289	>	result := FormatDateTime(GetTimestampFormatStr,AsDateTime);
1290		SQL_SHORT, SQL_LONG:
1291		if Scale = 0 then
1292		result := IntToStr(AsLong)
#	Line 1294 | Line 1314 | begin
1314		Result := false;
1315		end;
1316
1317	<	function TSQLDataItem.getIsNullable: boolean;
1317	>	function TSQLDataItem.GetIsNullable: boolean;
1318		begin
1319		CheckActive;
1320		Result := false;
#	Line 1342 | Line 1362 | begin
1362		Result := false;
1363		end;
1364
1365	+	function TSQLDataItem.GetDateTimeStrLength(DateTimeFormat: TIBDateTimeFormats
1366	+	): integer;
1367	+	begin
1368	+	case DateTimeFormat of
1369	+	dfTimestamp:
1370	+	Result := Length(GetTimestampFormatStr);
1371	+	dfDateTime:
1372	+	Result := Length(GetDateFormatStr(true));
1373	+	dfTime:
1374	+	Result := Length(GetTimeFormatStr);
1375	+	else
1376	+	Result := 0;
1377	+	end;
1378	+	end;
1379	+
1380
1381		procedure TSQLDataItem.SetIsNull(Value: Boolean);
1382		begin
#	Line 1715 | Line 1750 | begin
1750		result := FIBXSQLVAR.DataLength;
1751		end;
1752
1753	+	function TColumnMetaData.GetCharSetWidth: integer;
1754	+	begin
1755	+	CheckActive;
1756	+	result := FIBXSQLVAR.GetCharSetWidth;
1757	+	end;
1758	+
1759		function TColumnMetaData.GetArrayMetaData: IArrayMetaData;
1760		begin
1761		CheckActive;
#	Line 1727 | Line 1768 | begin
1768		result := FIBXSQLVAR.GetBlobMetaData;
1769		end;
1770
1771	+	function TColumnMetaData.GetStatement: IStatement;
1772	+	begin
1773	+	Result := FIBXSQLVAR.GetStatement;
1774	+	end;
1775	+
1776	+	function TColumnMetaData.GetTransaction: ITransaction;
1777	+	begin
1778	+	Result := GetStatement.GetTransaction;
1779	+	end;
1780	+
1781		{ TIBSQLData }
1782
1783		procedure TIBSQLData.CheckActive;
#	Line 1746 | Line 1797 | begin
1797		IBError(ibxeBOF,[nil]);
1798		end;
1799
1800	+	function TIBSQLData.GetTransaction: ITransaction;
1801	+	begin
1802	+	if FTransaction = nil then
1803	+	Result := inherited GetTransaction
1804	+	else
1805	+	Result := FTransaction;
1806	+	end;
1807	+
1808		function TIBSQLData.GetIsNull: Boolean;
1809		begin
1810		CheckActive;
#	Line 1789 | Line 1848 | end;
1848		{ TSQLParam }
1849
1850		procedure TSQLParam.InternalSetAsString(Value: AnsiString);
1851	+
1852	+	procedure DoSetString;
1853	+	begin
1854	+	Changing;
1855	+	FIBXSQLVar.SetString(Transliterate(Value,GetCodePage));
1856	+	Changed;
1857	+	end;
1858	+
1859		var b: IBlob;
1860		dt: TDateTime;
1861	+	CurrValue: Currency;
1862	+	FloatValue: single;
1863		begin
1864		CheckActive;
1865		if IsNullable then
#	Line 1816 | Line 1885 | begin
1885
1886		SQL_VARYING,
1887		SQL_TEXT:
1888	<	begin
1820	<	Changing;
1821	<	FIBXSQLVar.SetString(Transliterate(Value,GetCodePage));
1822	<	Changed;
1823	<	end;
1888	>	DoSetString;
1889
1890		SQL_SHORT,
1891		SQL_LONG,
1892		SQL_INT64:
1893	<	SetAsNumeric(AdjustScaleFromCurrency(StrToCurr(Value),GetScale),GetScale);
1893	>	if TryStrToCurr(Value,CurrValue) then
1894	>	SetAsNumeric(AdjustScaleFromCurrency(CurrValue,GetScale),GetScale)
1895	>	else
1896	>	DoSetString;
1897
1898		SQL_D_FLOAT,
1899		SQL_DOUBLE,
1900		SQL_FLOAT:
1901	<	SetAsDouble(StrToFloat(Value));
1901	>	if TryStrToFloat(Value,FloatValue) then
1902	>	SetAsDouble(FloatValue)
1903	>	else
1904	>	DoSetString;
1905
1906		SQL_TIMESTAMP:
1907		if TryStrToDateTime(Value,dt) then
1908		SetAsDateTime(dt)
1909		else
1910	<	FIBXSQLVar.SetString(Value);
1910	>	DoSetString;
1911
1912		SQL_TYPE_DATE:
1913		if TryStrToDateTime(Value,dt) then
1914		SetAsDate(dt)
1915		else
1916	<	FIBXSQLVar.SetString(Value);
1916	>	DoSetString;
1917
1918		SQL_TYPE_TIME:
1919		if TryStrToDateTime(Value,dt) then
1920		SetAsTime(dt)
1921		else
1922	<	FIBXSQLVar.SetString(Value);
1922	>	DoSetString;
1923
1924		else
1925		IBError(ibxeInvalidDataConversion,[nil]);
#	Line 2434 | Line 2505 | begin
2505		end;
2506		end;
2507
2508	+	function TSQLParams.GetHasCaseSensitiveParams: Boolean;
2509	+	begin
2510	+	Result := FSQLParams.CaseSensitiveParams;
2511	+	end;
2512	+
2513		{ TResults }
2514
2515		procedure TResults.CheckActive;
#	Line 2452 | Line 2528 | begin
2528		end;
2529
2530		function TResults.GetISQLData(aIBXSQLVAR: TSQLVarData): ISQLData;
2531	+	var col: TIBSQLData;
2532		begin
2533		if (aIBXSQLVAR.Index < 0) or (aIBXSQLVAR.Index >= getCount) then
2534		IBError(ibxeInvalidColumnIndex,[nil]);
2535
2536		if not HasInterface(aIBXSQLVAR.Index) then
2537		AddInterface(aIBXSQLVAR.Index, TIBSQLData.Create(self,aIBXSQLVAR));
2538	<	Result := TIBSQLData(GetInterface(aIBXSQLVAR.Index));
2538	>	col := TIBSQLData(GetInterface(aIBXSQLVAR.Index));
2539	>	col.FTransaction := GetTransaction;
2540	>	Result := col;
2541		end;
2542
2543		constructor TResults.Create(aResults: TSQLDataArea);
#	Line 2515 | Line 2594 | begin
2594		FResults.GetData(index,IsNull, len,data);
2595		end;
2596
2597	+	function TResults.GetStatement: IStatement;
2598	+	begin
2599	+	Result := FStatement;
2600	+	end;
2601	+
2602		function TResults.GetTransaction: ITransaction;
2603		begin
2604		Result := FStatement.GetTransaction;

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