sql server误删数据恢复delete（低效版）
关键词：sql server误删数据恢复，mssql误删数据恢复，delete
--切换数据库use master
--构建函数Create PROCEDURE Recover_Deleted_Data_Proc
@Database_Name NVARCHAR(MAX),
@SchemaName_n_TableName NVARCHAR(Max),
@Date_From DATETIME='1900/01/01',
@Date_To DATETIME ='9999/12/31'
ASDECLARE @RowLogContents VARBINARY(8000)
DECLARE @TransactionID NVARCHAR(Max)
DECLARE @AllocUnitID BIGINT
DECLARE @AllocUnitName NVARCHAR(Max)
DECLARE @SQL NVARCHAR(Max)
DECLARE @Compatibility_Level INTSELECT @Compatibility_Level=dtb.compatibility_level
FROM
master.sys.databases AS dtb WHERE dtb.name=@Database_NameIF ISNULL(@Compatibility_Level,0)<=80
BEGINRAISERROR('The compatibility level should be equal to or greater SQL SERVER 2005 (90)',16,1)RETURN
ENDIF (SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES WHERE [TABLE_SCHEMA]+'.'+[TABLE_NAME]=@SchemaName_n_TableName)=0
BEGINRAISERROR('Could not found the table in the defined database',16,1)RETURN
ENDDECLARE @bitTable TABLE
([ID] INT,[Bitvalue] INT
)
--Create table to set the bit position of one byte.INSERT INTO @bitTable
SELECT 0,2 UNION ALL
SELECT 1,2 UNION ALL
SELECT 2,4 UNION ALL
SELECT 3,8 UNION ALL
SELECT 4,16 UNION ALL
SELECT 5,32 UNION ALL
SELECT 6,64 UNION ALL
SELECT 7,128--Create table to collect the row data.
DECLARE @DeletedRecords TABLE
([Row ID] INT IDENTITY(1,1),[RowLogContents] VARBINARY(8000),[AllocUnitID] BIGINT,[Transaction ID] NVARCHAR(Max),[FixedLengthData] SMALLINT,[TotalNoOfCols] SMALLINT,[NullBitMapLength] SMALLINT,[NullBytes] VARBINARY(8000),[TotalNoofVarCols] SMALLINT,[ColumnOffsetArray] VARBINARY(8000),[VarColumnStart] SMALLINT,[Slot ID] INT,[NullBitMap] VARCHAR(MAX))
--Create a common table expression to get all the row data plus how many bytes we have for each row.
;WITH RowData AS (
SELECT[RowLog Contents 0] AS [RowLogContents] ,[AllocUnitID] AS [AllocUnitID] ,[Transaction ID] AS [Transaction ID] --[Fixed Length Data] = Substring (RowLog content 0, Status Bit A+ Status Bit B + 1,2 bytes)
,CONVERT(SMALLINT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) AS [FixedLengthData] --@FixedLengthData-- [TotalnoOfCols] = Substring (RowLog content 0, [Fixed Length Data] + 1,2 bytes)
,CONVERT(INT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], CONVERT(SMALLINT, CONVERT(BINARY(2)
,REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) + 1, 2)))) as [TotalNoOfCols]--[NullBitMapLength]=ceiling([Total No of Columns] /8.0)
,CONVERT(INT, ceiling(CONVERT(INT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], CONVERT(SMALLINT, CONVERT(BINARY(2)
,REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) + 1, 2))))/8.0)) as [NullBitMapLength] --[Null Bytes] = Substring (RowLog content 0, Status Bit A+ Status Bit B + [Fixed Length Data] +1, [NullBitMapLength] )
,SUBSTRING([RowLog Contents 0], CONVERT(SMALLINT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) + 3,
CONVERT(INT, ceiling(CONVERT(INT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], CONVERT(SMALLINT, CONVERT(BINARY(2)
,REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) + 1, 2))))/8.0))) as [NullBytes]--[TotalNoofVarCols] = Substring (RowLog content 0, Status Bit A+ Status Bit B + [Fixed Length Data] +1, [Null Bitmap length] + 2 )
,(CASE WHEN SUBSTRING([RowLog Contents 0], 1, 1) In (0x10,0x30,0x70) THEN
CONVERT(INT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0],
CONVERT(SMALLINT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) + 3
+ CONVERT(INT, ceiling(CONVERT(INT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], CONVERT(SMALLINT, CONVERT(BINARY(2)
,REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) + 1, 2))))/8.0)), 2)))) ELSE null END) AS [TotalNoofVarCols] --[ColumnOffsetArray]= Substring (RowLog content 0, Status Bit A+ Status Bit B + [Fixed Length Data] +1, [Null Bitmap length] + 2 , [TotalNoofVarCols]*2 )
,(CASE WHEN SUBSTRING([RowLog Contents 0], 1, 1) In (0x10,0x30,0x70) THEN
SUBSTRING([RowLog Contents 0]
, CONVERT(SMALLINT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) + 3
+ CONVERT(INT, ceiling(CONVERT(INT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], CONVERT(SMALLINT, CONVERT(BINARY(2)
,REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) + 1, 2))))/8.0)) + 2
, (CASE WHEN SUBSTRING([RowLog Contents 0], 1, 1) In (0x10,0x30,0x70) THEN
CONVERT(INT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0],
CONVERT(SMALLINT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) + 3
+ CONVERT(INT, ceiling(CONVERT(INT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], CONVERT(SMALLINT, CONVERT(BINARY(2)
,REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) + 1, 2))))/8.0)), 2)))) ELSE null END)
* 2) ELSE null END) AS [ColumnOffsetArray] -- Variable column Start = Status Bit A+ Status Bit B + [Fixed Length Data] + [Null Bitmap length] + 2+([TotalNoofVarCols]*2)
,CASE WHEN SUBSTRING([RowLog Contents 0], 1, 1)In (0x10,0x30,0x70)
THEN (
CONVERT(SMALLINT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) + 4 + CONVERT(INT, ceiling(CONVERT(INT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], CONVERT(SMALLINT, CONVERT(BINARY(2)
,REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) + 1, 2))))/8.0)) + ((CASE WHEN SUBSTRING([RowLog Contents 0], 1, 1) In (0x10,0x30,0x70) THEN
CONVERT(INT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0],
CONVERT(SMALLINT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) + 3
+ CONVERT(INT, ceiling(CONVERT(INT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], CONVERT(SMALLINT, CONVERT(BINARY(2)
,REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) + 1, 2))))/8.0)), 2)))) ELSE null END) * 2)) ELSE null End AS [VarColumnStart]
,[Slot ID]
FROM sys.fn_dblog(NULL, NULL)
WHERE
AllocUnitId IN
(SELECT [Allocation_unit_id] FROM sys.allocation_units allocunits
INNER JOIN sys.partitions partitions ON (allocunits.type IN (1, 3)
AND partitions.hobt_id = allocunits.container_id) OR (allocunits.type = 2
AND partitions.partition_id = allocunits.container_id)
WHERE object_id=object_ID('' + @SchemaName_n_TableName + ''))AND Context IN ('LCX_MARK_AS_GHOST', 'LCX_HEAP') AND Operation in ('LOP_DELETE_ROWS')
And SUBSTRING([RowLog Contents 0], 1, 1)In (0x10,0x30,0x70)/*Use this subquery to filter the date*/
AND [TRANSACTION ID] IN (SELECT DISTINCT [TRANSACTION ID] FROM sys.fn_dblog(NULL, NULL)
WHERE Context IN ('LCX_NULL') AND Operation in ('LOP_BEGIN_XACT')
And [Transaction Name] In ('DELETE','user_transaction')
And CONVERT(NVARCHAR(11),[Begin Time]) BETWEEN @Date_From AND @Date_To)),--Use this technique to repeate the row till the no of bytes of the row.
N1 (n) AS (SELECT 1 UNION ALL SELECT 1),
N2 (n) AS (SELECT 1 FROM N1 AS X, N1 AS Y),
N3 (n) AS (SELECT 1 FROM N2 AS X, N2 AS Y),
N4 (n) AS (SELECT ROW_NUMBER() OVER(ORDER BY X.n)FROM N3 AS X, N3 AS Y)INSERT INTO @DeletedRecords
SELECT RowLogContents,[AllocUnitID],[Transaction ID],[FixedLengthData],[TotalNoOfCols],[NullBitMapLength],[NullBytes],[TotalNoofVarCols],[ColumnOffsetArray],[VarColumnStart],[Slot ID]---Get the Null value against each column (1 means null zero means not null),[NullBitMap]=(REPLACE(STUFF((SELECT ',' +(CASE WHEN [ID]=0 THEN CONVERT(NVARCHAR(1),(SUBSTRING(NullBytes, n, 1) % 2)) ELSE CONVERT(NVARCHAR(1),((SUBSTRING(NullBytes, n, 1) / [Bitvalue]) % 2)) END) --as [nullBitMap]FROM
N4 AS Nums
Join RowData AS C ON n<=NullBitMapLength
Cross Join @bitTable WHERE C.[RowLogContents]=D.[RowLogContents] ORDER BY [RowLogContents],n ASC FOR XML PATH('')),1,1,''),',',''))
FROM RowData DIF (SELECT COUNT(*) FROM @DeletedRecords)=0
BEGINRAISERROR('There is no data in the log as per the search criteria',16,1)RETURN
ENDDECLARE @ColumnNameAndData TABLE
([Row ID] int,[Rowlogcontents] varbinary(Max),[NAME] sysname,[nullbit] smallint,[leaf_offset] smallint,[length] smallint,[system_type_id] tinyint,[bitpos] tinyint,[xprec] tinyint,[xscale] tinyint,[is_null] int,[Column value Size]int,[Column Length] int,[hex_Value] varbinary(max),[Slot ID] int,[Update] int
)--Create common table expression and join it with the rowdata table
-- to get each column details
/*This part is for variable data columns*/
--@RowLogContents,
--(col.columnOffValue - col.columnLength) + 1,
--col.columnLength
--)
INSERT INTO @ColumnNameAndData
SELECT
[Row ID],
Rowlogcontents,
NAME ,
cols.leaf_null_bit AS nullbit,
leaf_offset,
ISNULL(syscolumns.length, cols.max_length) AS [length],
cols.system_type_id,
cols.leaf_bit_position AS bitpos,
ISNULL(syscolumns.xprec, cols.precision) AS xprec,
ISNULL(syscolumns.xscale, cols.scale) AS xscale,
SUBSTRING([nullBitMap], cols.leaf_null_bit, 1) AS is_null,
(CASE WHEN leaf_offset<1 and SUBSTRING([nullBitMap], cols.leaf_null_bit, 1)=0
THEN
(Case When CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) >30000
THEN
CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) - POWER(2, 15)
ELSE
CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2))))
END)
END) AS [Column value Size],(CASE WHEN leaf_offset<1 and SUBSTRING([nullBitMap], cols.leaf_null_bit, 1)=0 THEN
(CaseWhen CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) >30000 And
ISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])<30000
THEN (Case When [System_type_id]In (35,34,99) Then 16 else 24 end)When CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) >30000 And
ISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])>30000
THEN (Case When [System_type_id]In (35,34,99) Then 16 else 24 end) --24 When CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) <30000 And
ISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])<30000
THEN (CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2))))
- ISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart]))When CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) <30000 And
ISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])>30000THEN POWER(2, 15) +CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2))))
- ISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])END)END) AS [Column Length],(CASE WHEN SUBSTRING([nullBitMap], cols.leaf_null_bit, 1)=1 THEN NULL ELSESUBSTRING(Rowlogcontents, ((Case When CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) >30000
THEN
CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) - POWER(2, 15)
ELSE
CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2))))
END)-
(Case When CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) >30000 And
ISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])<30000THEN (Case When [System_type_id]In (35,34,99) Then 16 else 24 end) --24
When CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) >30000 And
ISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])>30000THEN (Case When [System_type_id]In (35,34,99) Then 16 else 24 end) --24
When CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) <30000 And
ISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])<30000THEN CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2))))
- ISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])When CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) <30000 And
ISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])>30000THEN POWER(2, 15) +CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2))))
- ISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])END)) + 1,
(Case When CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) >30000 And
ISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])<30000THEN (Case When [System_type_id] In (35,34,99) Then 16 else 24 end) --24
When CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) >30000 And
ISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])>30000THEN (Case When [System_type_id] In (35,34,99) Then 16 else 24 end) --24
When CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) <30000 And
ISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])<30000THEN ABS(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2))))
- ISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart]))When CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) <30000 And
ISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])>30000THEN POWER(2, 15) +CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2))))
- ISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])END)
)END) AS hex_Value
,[Slot ID]
,0
FROM @DeletedRecords A
Inner Join sys.allocation_units allocunits On A.[AllocUnitId]=allocunits.[Allocation_Unit_Id]
INNER JOIN sys.partitions partitions ON (allocunits.type IN (1, 3)
AND partitions.hobt_id = allocunits.container_id) OR (allocunits.type = 2 AND partitions.partition_id = allocunits.container_id)
INNER JOIN sys.system_internals_partition_columns cols ON cols.partition_id = partitions.partition_id
LEFT OUTER JOIN syscolumns ON syscolumns.id = partitions.object_id AND syscolumns.colid = cols.partition_column_id
WHERE leaf_offset<0
UNION
/*This part is for fixed data columns*/
SELECT
[Row ID],
Rowlogcontents,
NAME ,
cols.leaf_null_bit AS nullbit,
leaf_offset,
ISNULL(syscolumns.length, cols.max_length) AS [length],
cols.system_type_id,
cols.leaf_bit_position AS bitpos,
ISNULL(syscolumns.xprec, cols.precision) AS xprec,
ISNULL(syscolumns.xscale, cols.scale) AS xscale,
SUBSTRING([nullBitMap], cols.leaf_null_bit, 1) AS is_null,
(SELECT TOP 1 ISNULL(SUM(CASE WHEN C.leaf_offset >1 THEN max_length ELSE 0 END),0) FROM
sys.system_internals_partition_columns C WHERE cols.partition_id =C.partition_id And C.leaf_null_bit<cols.leaf_null_bit)+5 AS [Column value Size],
syscolumns.length AS [Column Length],CASE WHEN SUBSTRING([nullBitMap], cols.leaf_null_bit, 1)=1 THEN NULL ELSE
SUBSTRING
(
Rowlogcontents,(SELECT TOP 1 ISNULL(SUM(CASE WHEN C.leaf_offset >1 And C.leaf_bit_position=0 THEN max_length ELSE 0 END),0) FROM
sys.system_internals_partition_columns C where cols.partition_id =C.partition_id And C.leaf_null_bit<cols.leaf_null_bit)+5
,syscolumns.length) END AS hex_Value
,[Slot ID]
,0
FROM @DeletedRecords A
Inner Join sys.allocation_units allocunits ON A.[AllocUnitId]=allocunits.[Allocation_Unit_Id]
INNER JOIN sys.partitions partitions ON (allocunits.type IN (1, 3)
AND partitions.hobt_id = allocunits.container_id) OR (allocunits.type = 2 AND partitions.partition_id = allocunits.container_id)
INNER JOIN sys.system_internals_partition_columns cols ON cols.partition_id = partitions.partition_id
LEFT OUTER JOIN syscolumns ON syscolumns.id = partitions.object_id AND syscolumns.colid = cols.partition_column_id
WHERE leaf_offset>0
Order By nullbitDeclare @BitColumnByte as int
Select @BitColumnByte=CONVERT(INT, ceiling( Count(*)/8.0)) from @ColumnNameAndData Where [System_Type_id]=104;With N1 (n) AS (SELECT 1 UNION ALL SELECT 1),
N2 (n) AS (SELECT 1 FROM N1 AS X, N1 AS Y),
N3 (n) AS (SELECT 1 FROM N2 AS X, N2 AS Y),
N4 (n) AS (SELECT ROW_NUMBER() OVER(ORDER BY X.n)FROM N3 AS X, N3 AS Y),
CTE As(
Select RowLogContents,[nullbit],[BitMap]=Convert(varbinary(1),Convert(int,Substring((REPLACE(STUFF((SELECT ',' +(CASE WHEN [ID]=0 THEN CONVERT(NVARCHAR(1),(SUBSTRING(hex_Value, n, 1) % 2)) ELSE CONVERT(NVARCHAR(1),((SUBSTRING(hex_Value, n, 1) / [Bitvalue]) % 2)) END) --as [nullBitMap]from N4 AS Nums
Join @ColumnNameAndData AS C ON n<=@BitColumnByte And [System_Type_id]=104 And bitpos=0
Cross Join @bitTable WHERE C.[RowLogContents]=D.[RowLogContents] ORDER BY [RowLogContents],n ASC FOR XML PATH('')),1,1,''),',','')),bitpos+1,1)))
FROM @ColumnNameAndData D Where [System_Type_id]=104)Update A Set [hex_Value]=[BitMap]
from @ColumnNameAndData A
Inner Join CTE B On A.[RowLogContents]=B.[RowLogContents]
And A.[nullbit]=B.[nullbit]/**************Check for BLOB DATA TYPES******************************/
DECLARE @Fileid INT
DECLARE @Pageid INT
DECLARE @Slotid INT
DECLARE @CurrentLSN INT
DECLARE @LinkID INT
DECLARE @Context VARCHAR(50)
DECLARE @ConsolidatedPageID VARCHAR(MAX)
DECLARE @LCX_TEXT_MIX VARBINARY(MAX)declare @temppagedata table
(
[ParentObject] sysname,
[Object] sysname,
[Field] sysname,
[Value] sysname)declare @pagedata table
(
[Page ID] sysname,
[File IDS] int,
[Page IDS] int,
[AllocUnitId] bigint,
[ParentObject] sysname,
[Object] sysname,
[Field] sysname,
[Value] sysname)DECLARE @ModifiedRawData TABLE
([ID] INT IDENTITY(1,1),[PAGE ID] VARCHAR(MAX),[FILE IDS] INT,[PAGE IDS] INT,[Slot ID] INT,[AllocUnitId] BIGINT,[RowLog Contents 0_var] VARCHAR(Max),[RowLog Length] VARCHAR(50),[RowLog Len] INT,[RowLog Contents 0] VARBINARY(Max),[Link ID] INT default (0),[Update] INT
)DECLARE Page_Data_Cursor CURSOR FOR/*We need to filter LOP_MODIFY_ROW,LOP_MODIFY_COLUMNS from log for deleted records of BLOB data type& Get its Slot No, Page ID & AllocUnit ID*/SELECT LTRIM(RTRIM(Replace([Description],'Deallocated',''))) AS [PAGE ID],[Slot ID],[AllocUnitId],NULL AS [RowLog Contents 0],NULL AS [RowLog Contents 0],ContextFROM sys.fn_dblog(NULL, NULL) WHERE AllocUnitId IN(SELECT [Allocation_unit_id] FROM sys.allocation_units allocunitsINNER JOIN sys.partitions partitions ON (allocunits.type IN (1, 3) AND partitions.hobt_id = allocunits.container_id) OR (allocunits.type = 2 AND partitions.partition_id = allocunits.container_id) WHERE object_id=object_ID('' + @SchemaName_n_TableName + ''))AND Operation IN ('LOP_MODIFY_ROW') AND [Context] IN ('LCX_PFS') AND Description Like '%Deallocated%'/*Use this subquery to filter the date*/AND [TRANSACTION ID] IN (SELECT DISTINCT [TRANSACTION ID] FROM sys.fn_dblog(NULL, NULL) WHERE Context IN ('LCX_NULL') AND Operation in ('LOP_BEGIN_XACT') AND [Transaction Name]='DELETE'AND CONVERT(NVARCHAR(11),[Begin Time]) BETWEEN @Date_From AND @Date_To)GROUP BY [Description],[Slot ID],[AllocUnitId],ContextUNIONSELECT [PAGE ID],[Slot ID],[AllocUnitId],Substring([RowLog Contents 0],15,LEN([RowLog Contents 0])) AS [RowLog Contents 0],CONVERT(INT,Substring([RowLog Contents 0],7,2)),Context --,CAST(RIGHT([Current LSN],4) AS INT) AS [Current LSN]FROM sys.fn_dblog(NULL, NULL) WHERE AllocUnitId IN(SELECT [Allocation_unit_id] FROM sys.allocation_units allocunitsINNER JOIN sys.partitions partitions ON (allocunits.type IN (1, 3) AND partitions.hobt_id = allocunits.container_id) OR (allocunits.type = 2 AND partitions.partition_id = allocunits.container_id) WHERE object_id=object_ID('' + @SchemaName_n_TableName + ''))AND Context IN ('LCX_TEXT_MIX') AND Operation in ('LOP_DELETE_ROWS') /*Use this subquery to filter the date*/AND [TRANSACTION ID] IN (SELECT DISTINCT [TRANSACTION ID] FROM sys.fn_dblog(NULL, NULL) WHERE Context IN ('LCX_NULL') AND Operation in ('LOP_BEGIN_XACT') And [Transaction Name]='DELETE'And CONVERT(NVARCHAR(11),[Begin Time]) BETWEEN @Date_From AND @Date_To)/****************************************/OPEN Page_Data_CursorFETCH NEXT FROM Page_Data_Cursor INTO @ConsolidatedPageID, @Slotid,@AllocUnitID,@LCX_TEXT_MIX,@LinkID,@ContextWHILE @@FETCH_STATUS = 0BEGINDECLARE @hex_pageid AS VARCHAR(Max)/*Page ID contains File Number and page number It looks like 0001:00000130.In this example 0001 is file Number & 00000130 is Page Number & These numbers are in Hex format*/SET @Fileid=SUBSTRING(@ConsolidatedPageID,0,CHARINDEX(':',@ConsolidatedPageID)) -- Seperate File ID from Page IDSET @hex_pageid ='0x'+ SUBSTRING(@ConsolidatedPageID,CHARINDEX(':',@ConsolidatedPageID)+1,Len(@ConsolidatedPageID)) ---Seperate the page IDSELECT @Pageid=Convert(INT,cast('' AS XML).value('xs:hexBinary(substring(sql:variable("@hex_pageid"),sql:column("t.pos")) )', 'varbinary(max)')) -- Convert Page ID from hex to integerFROM (SELECT CASE substring(@hex_pageid, 1, 2) WHEN '0x' THEN 3 ELSE 0 END) AS t(pos) IF @Context='LCX_PFS' BEGINDELETE @temppagedataINSERT INTO @temppagedata EXEC( 'DBCC PAGE(' + @DataBase_Name + ', ' + @fileid + ', ' + @pageid + ', 1) with tableresults,no_infomsgs;'); INSERT INTO @pagedata SELECT @ConsolidatedPageID,@fileid,@pageid,@AllocUnitID,[ParentObject],[Object],[Field] ,[Value] FROM @temppagedataENDELSE IF @Context='LCX_TEXT_MIX'BEGININSERT INTO @ModifiedRawData SELECT @ConsolidatedPageID,@fileid,@pageid,@Slotid,@AllocUnitID,NULL,0,CONVERT(INT,CONVERT(VARBINARY,REVERSE(SUBSTRING(@LCX_TEXT_MIX,11,2)))),@LCX_TEXT_MIX,@LinkID,0END FETCH NEXT FROM Page_Data_Cursor INTO @ConsolidatedPageID, @Slotid,@AllocUnitID,@LCX_TEXT_MIX,@LinkID,@ContextENDCLOSE Page_Data_CursorDEALLOCATE Page_Data_CursorDECLARE @Newhexstring VARCHAR(MAX);--The data is in multiple rows in the page, so we need to convert it into one row as a single hex value.--This hex value is in string formatINSERT INTO @ModifiedRawData ([PAGE ID],[FILE IDS],[PAGE IDS],[Slot ID],[AllocUnitId],[RowLog Contents 0_var], [RowLog Length])SELECT [Page ID],[FILE IDS],[PAGE IDS],Substring([ParentObject],CHARINDEX('Slot', [ParentObject])+4, (CHARINDEX('Offset', [ParentObject])-(CHARINDEX('Slot', [ParentObject])+4))-2 ) as [Slot ID],[AllocUnitId],Substring((SELECTREPLACE(STUFF((SELECT REPLACE(SUBSTRING([Value],CHARINDEX(':',[Value])+1,CHARINDEX('†',[Value])-CHARINDEX(':',[Value])),'†','')FROM @pagedata C WHERE B.[Page ID]= C.[Page ID] And Substring(B.[ParentObject],CHARINDEX('Slot', B.[ParentObject])+4, (CHARINDEX('Offset', B.[ParentObject])-(CHARINDEX('Slot', B.[ParentObject])+4)) )=Substring(C.[ParentObject],CHARINDEX('Slot', C.[ParentObject])+4, (CHARINDEX('Offset', C.[ParentObject])-(CHARINDEX('Slot', C.[ParentObject])+4)) ) And[Object] Like '%Memory Dump%' Order By '0x'+ LEFT([Value],CHARINDEX(':',[Value])-1)FOR XML PATH('') ),1,1,'') ,' ','')),1,20000) AS [Value],Substring((SELECT '0x' +REPLACE(STUFF((SELECT REPLACE(SUBSTRING([Value],CHARINDEX(':',[Value])+1,CHARINDEX('†',[Value])-CHARINDEX(':',[Value])),'†','')FROM @pagedata C WHERE B.[Page ID]= C.[Page ID] And Substring(B.[ParentObject],CHARINDEX('Slot', B.[ParentObject])+4, (CHARINDEX('Offset', B.[ParentObject])-(CHARINDEX('Slot', B.[ParentObject])+4)) )=Substring(C.[ParentObject],CHARINDEX('Slot', C.[ParentObject])+4, (CHARINDEX('Offset', C.[ParentObject])-(CHARINDEX('Slot', C.[ParentObject])+4)) ) And[Object] Like '%Memory Dump%' Order By '0x'+ LEFT([Value],CHARINDEX(':',[Value])-1)FOR XML PATH('') ),1,1,'') ,' ','')),7,4) AS [Length]From @pagedata BWhere [Object] Like '%Memory Dump%'Group By [Page ID],[FILE IDS],[PAGE IDS],[ParentObject],[AllocUnitId]--,[Current LSN]Order By [Slot ID]UPDATE @ModifiedRawData SET [RowLog Len] = CONVERT(VARBINARY(8000),REVERSE(cast('' AS XML).value('xs:hexBinary(substring(sql:column("[RowLog Length]"),0))', 'varbinary(Max)')))FROM @ModifiedRawData Where [LINK ID]=0UPDATE @ModifiedRawData SET [RowLog Contents 0] =cast('' AS XML).value('xs:hexBinary(substring(sql:column("[RowLog Contents 0_var]"),0))', 'varbinary(Max)') FROM @ModifiedRawData Where [LINK ID]=0Update B Set B.[RowLog Contents 0] =(CASE WHEN A.[RowLog Contents 0] IS NOT NULL AND C.[RowLog Contents 0] IS NOT NULL THEN A.[RowLog Contents 0]+C.[RowLog Contents 0] WHEN A.[RowLog Contents 0] IS NULL AND C.[RowLog Contents 0] IS NOT NULL THEN C.[RowLog Contents 0]WHEN A.[RowLog Contents 0] IS NOT NULL AND C.[RowLog Contents 0] IS NULL THEN A.[RowLog Contents 0] END),B.[Update]=ISNULL(B.[Update],0)+1from @ModifiedRawData BLEFT Join @ModifiedRawData A On A.[Page IDS]=Convert(int,Convert(Varbinary(Max),Reverse(Substring(B.[RowLog Contents 0],15+14,2))))And A.[File IDS]=Convert(int,Convert(Varbinary(Max),Reverse(Substring(B.[RowLog Contents 0],19+14,2)))) And A.[Link ID]=B.[Link ID]LEFT Join @ModifiedRawData C On C.[Page IDS]=Convert(int,Convert(Varbinary(Max),Reverse(Substring(B.[RowLog Contents 0],27+14,2))))And C.[File IDS]=Convert(int,Convert(Varbinary(Max),Reverse(Substring(B.[RowLog Contents 0],31+14,2))))And C.[Link ID]=B.[Link ID]Where (A.[RowLog Contents 0] IS NOT NULL OR C.[RowLog Contents 0] IS NOT NULL)Update B Set B.[RowLog Contents 0] =(CASE WHEN A.[RowLog Contents 0] IS NOT NULL AND C.[RowLog Contents 0] IS NOT NULL THEN A.[RowLog Contents 0]+C.[RowLog Contents 0] WHEN A.[RowLog Contents 0] IS NULL AND C.[RowLog Contents 0] IS NOT NULL THEN C.[RowLog Contents 0]WHEN A.[RowLog Contents 0] IS NOT NULL AND C.[RowLog Contents 0] IS NULL THEN A.[RowLog Contents 0] END)--,B.[Update]=ISNULL(B.[Update],0)+1from @ModifiedRawData BLEFT Join @ModifiedRawData A On A.[Page IDS]=Convert(int,Convert(Varbinary(Max),Reverse(Substring(B.[RowLog Contents 0],15+14,2))))And A.[File IDS]=Convert(int,Convert(Varbinary(Max),Reverse(Substring(B.[RowLog Contents 0],19+14,2)))) And A.[Link ID]<>B.[Link ID] And B.[Update]=0LEFT Join @ModifiedRawData C On C.[Page IDS]=Convert(int,Convert(Varbinary(Max),Reverse(Substring(B.[RowLog Contents 0],27+14,2))))And C.[File IDS]=Convert(int,Convert(Varbinary(Max),Reverse(Substring(B.[RowLog Contents 0],31+14,2))))And C.[Link ID]<>B.[Link ID] And B.[Update]=0Where (A.[RowLog Contents 0] IS NOT NULL OR C.[RowLog Contents 0] IS NOT NULL)UPDATE @ModifiedRawData SET [RowLog Contents 0] = (Case When [RowLog Len]>=8000 ThenSubstring([RowLog Contents 0] ,15,[RowLog Len]) When [RowLog Len]<8000 ThenSUBSTRING([RowLog Contents 0],15+6,Convert(int,Convert(varbinary(max),REVERSE(Substring([RowLog Contents 0],15,6)))))End)FROM @ModifiedRawData Where [LINK ID]=0UPDATE @ColumnNameAndData SET [hex_Value]=[RowLog Contents 0] --,A.[Update]=A.[Update]+1FROM @ColumnNameAndData AINNER JOIN @ModifiedRawData B ONConvert(int,Convert(Varbinary(Max),Reverse(Substring([hex_value],17,4))))=[PAGE IDS]AND Convert(int,Substring([hex_value],9,2)) =B.[Link ID] Where [System_Type_Id] In (99,167,175,231,239,241,165,98) And [Link ID] <>0 UPDATE @ColumnNameAndData SET [hex_Value]=(CASE WHEN B.[RowLog Contents 0] IS NOT NULL AND C.[RowLog Contents 0] IS NOT NULL THEN B.[RowLog Contents 0]+C.[RowLog Contents 0] WHEN B.[RowLog Contents 0] IS NULL AND C.[RowLog Contents 0] IS NOT NULL THEN C.[RowLog Contents 0]WHEN B.[RowLog Contents 0] IS NOT NULL AND C.[RowLog Contents 0] IS NULL THEN B.[RowLog Contents 0] END)--,A.[Update]=A.[Update]+1FROM @ColumnNameAndData ALEFT JOIN @ModifiedRawData B ONConvert(int,Convert(Varbinary(Max),Reverse(Substring([hex_value],5,4))))=B.[PAGE IDS] And B.[Link ID] =0 LEFT JOIN @ModifiedRawData C ONConvert(int,Convert(Varbinary(Max),Reverse(Substring([hex_value],17,4))))=C.[PAGE IDS] And C.[Link ID] =0 Where [System_Type_Id] In (99,167,175,231,239,241,165,98) And (B.[RowLog Contents 0] IS NOT NULL OR C.[RowLog Contents 0] IS NOT NULL)UPDATE @ColumnNameAndData SET [hex_Value]=[RowLog Contents 0] --,A.[Update]=A.[Update]+1FROM @ColumnNameAndData AINNER JOIN @ModifiedRawData B ONConvert(int,Convert(Varbinary(Max),Reverse(Substring([hex_value],9,4))))=[PAGE IDS]And Convert(int,Substring([hex_value],3,2))=[Link ID]Where [System_Type_Id] In (35,34,99) And [Link ID] <>0 UPDATE @ColumnNameAndData SET [hex_Value]=[RowLog Contents 0]--,A.[Update]=A.[Update]+10FROM @ColumnNameAndData AINNER JOIN @ModifiedRawData B ONConvert(int,Convert(Varbinary(Max),Reverse(Substring([hex_value],9,4))))=[PAGE IDS]Where [System_Type_Id] In (35,34,99) And [Link ID] =0UPDATE @ColumnNameAndData SET [hex_Value]=[RowLog Contents 0] --,A.[Update]=A.[Update]+1FROM @ColumnNameAndData AINNER JOIN @ModifiedRawData B ONConvert(int,Convert(Varbinary(Max),Reverse(Substring([hex_value],15,4))))=[PAGE IDS]Where [System_Type_Id] In (35,34,99) And [Link ID] =0Update @ColumnNameAndData set [hex_value]= 0xFFFE + Substring([hex_value],9,LEN([hex_value]))--,[Update]=[Update]+1Where [system_type_id]=241CREATE TABLE [#temp_Data]
([FieldName] VARCHAR(MAX),[FieldValue] NVARCHAR(MAX),[Rowlogcontents] VARBINARY(8000),[Row ID] int
)INSERT INTO #temp_Data
SELECT NAME,
CASEWHEN system_type_id IN (231, 239) THEN LTRIM(RTRIM(CONVERT(NVARCHAR(max),hex_Value))) --NVARCHAR ,NCHARWHEN system_type_id IN (167,175) THEN LTRIM(RTRIM(CONVERT(VARCHAR(max),hex_Value))) --VARCHAR,CHARWHEN system_type_id IN (35) THEN LTRIM(RTRIM(CONVERT(VARCHAR(max),hex_Value))) --TextWHEN system_type_id IN (99) THEN LTRIM(RTRIM(CONVERT(NVARCHAR(max),hex_Value))) --nText WHEN system_type_id = 48 THEN CONVERT(VARCHAR(MAX), CONVERT(TINYINT, CONVERT(BINARY(1), REVERSE (hex_Value)))) --TINY INTEGERWHEN system_type_id = 52 THEN CONVERT(VARCHAR(MAX), CONVERT(SMALLINT, CONVERT(BINARY(2), REVERSE (hex_Value)))) --SMALL INTEGERWHEN system_type_id = 56 THEN CONVERT(VARCHAR(MAX), CONVERT(INT, CONVERT(BINARY(4), REVERSE(hex_Value)))) -- INTEGERWHEN system_type_id = 127 THEN CONVERT(VARCHAR(MAX), CONVERT(BIGINT, CONVERT(BINARY(8), REVERSE(hex_Value))))-- BIG INTEGERWHEN system_type_id = 61 Then CONVERT(VARCHAR(MAX),CONVERT(DATETIME,CONVERT(VARBINARY(8000),REVERSE (hex_Value))),100) --DATETIMEWHEN system_type_id =58 Then CONVERT(VARCHAR(MAX),CONVERT(SMALLDATETIME,CONVERT(VARBINARY(8000),REVERSE(hex_Value))),100) --SMALL DATETIMEWHEN system_type_id = 108 THEN CONVERT(VARCHAR(MAX),CONVERT(NUMERIC(38,20), CONVERT(VARBINARY,CONVERT(VARBINARY(1),xprec)+CONVERT(VARBINARY(1),xscale))+CONVERT(VARBINARY(1),0) + hex_Value)) --- NUMERICWHEN system_type_id =106 THEN CONVERT(VARCHAR(MAX), CONVERT(DECIMAL(38,20), CONVERT(VARBINARY,Convert(VARBINARY(1),xprec)+CONVERT(VARBINARY(1),xscale))+CONVERT(VARBINARY(1),0) + hex_Value)) --- DECIMALWHEN system_type_id In(60,122) THEN CONVERT(VARCHAR(MAX),Convert(MONEY,Convert(VARBINARY(8000),Reverse(hex_Value))),2) --MONEY,SMALLMONEYWHEN system_type_id = 104 THEN CONVERT(VARCHAR(MAX),CONVERT (BIT,CONVERT(BINARY(1), hex_Value)%2)) -- BITWHEN system_type_id =62 THEN RTRIM(LTRIM(STR(CONVERT(FLOAT,SIGN(CAST(CONVERT(VARBINARY(8000),Reverse(hex_Value)) AS BIGINT)) * (1.0 + (CAST(CONVERT(VARBINARY(8000),Reverse(hex_Value)) AS BIGINT) & 0x000FFFFFFFFFFFFF) * POWER(CAST(2 AS FLOAT), -52)) * POWER(CAST(2 AS FLOAT),((CAST(CONVERT(VARBINARY(8000),Reverse(hex_Value)) AS BIGINT) & 0x7ff0000000000000) / EXP(52 * LOG(2))-1023))),53,LEN(hex_Value)))) --- FLOATWhen system_type_id =59 THEN Left(LTRIM(STR(CAST(SIGN(CAST(Convert(VARBINARY(8000),REVERSE(hex_Value)) AS BIGINT))* (1.0 + (CAST(CONVERT(VARBINARY(8000),Reverse(hex_Value)) AS BIGINT) & 0x007FFFFF) * POWER(CAST(2 AS Real), -23)) * POWER(CAST(2 AS Real),(((CAST(CONVERT(VARBINARY(8000),Reverse(hex_Value)) AS INT) )& 0x7f800000)/ EXP(23 * LOG(2))-127))AS REAL),23,23)),8) --RealWHEN system_type_id In (165,173) THEN (CASE WHEN CHARINDEX(0x,cast('' AS XML).value('xs:hexBinary(sql:column("hex_Value"))', 'VARBINARY(8000)')) = 0 THEN '0x' ELSE '' END) +cast('' AS XML).value('xs:hexBinary(sql:column("hex_Value"))', 'varchar(max)') -- BINARY,VARBINARYWHEN system_type_id =34 THEN (CASE WHEN CHARINDEX(0x,cast('' AS XML).value('xs:hexBinary(sql:column("hex_Value"))', 'VARBINARY(8000)')) = 0 THEN '0x' ELSE '' END) +cast('' AS XML).value('xs:hexBinary(sql:column("hex_Value"))', 'varchar(max)') --IMAGEWHEN system_type_id =36 THEN CONVERT(VARCHAR(MAX),CONVERT(UNIQUEIDENTIFIER,hex_Value)) --UNIQUEIDENTIFIERWHEN system_type_id =231 THEN CONVERT(VARCHAR(MAX),CONVERT(sysname,hex_Value)) --SYSNAMEWHEN system_type_id =241 THEN CONVERT(VARCHAR(MAX),CONVERT(xml,hex_Value)) --XMLWHEN system_type_id =189 THEN (CASE WHEN CHARINDEX(0x,cast('' AS XML).value('xs:hexBinary(sql:column("hex_Value"))', 'VARBINARY(8000)')) = 0 THEN '0x' ELSE '' END) +cast('' AS XML).value('xs:hexBinary(sql:column("hex_Value"))', 'varchar(max)') --TIMESTAMPWHEN system_type_id=98 THEN (CASEWHEN CONVERT(INT,SUBSTRING(hex_Value,1,1))=56 THEN CONVERT(VARCHAR(MAX), CONVERT(INT, CONVERT(BINARY(4), REVERSE(Substring(hex_Value,3,Len(hex_Value)))))) -- INTEGERWHEN CONVERT(INT,SUBSTRING(hex_Value,1,1))=108 THEN CONVERT(VARCHAR(MAX),CONVERT(numeric(38,20),CONVERT(VARBINARY(1),Substring(hex_Value,3,1)) +CONVERT(VARBINARY(1),Substring(hex_Value,4,1))+CONVERT(VARBINARY(1),0) + Substring(hex_Value,5,Len(hex_Value)))) --- NUMERICWHEN CONVERT(INT,SUBSTRING(hex_Value,1,1))=167 THEN LTRIM(RTRIM(CONVERT(VARCHAR(max),Substring(hex_Value,9,Len(hex_Value))))) --VARCHAR,CHARWHEN CONVERT(INT,SUBSTRING(hex_Value,1,1))=36 THEN CONVERT(VARCHAR(MAX),CONVERT(UNIQUEIDENTIFIER,Substring((hex_Value),3,20))) --UNIQUEIDENTIFIERWHEN CONVERT(INT,SUBSTRING(hex_Value,1,1))=61 THEN CONVERT(VARCHAR(MAX),CONVERT(DATETIME,CONVERT(VARBINARY(8000),REVERSE (Substring(hex_Value,3,LEN(hex_Value)) ))),100) --DATETIMEWHEN CONVERT(INT,SUBSTRING(hex_Value,1,1))=165 THEN '0x'+ SUBSTRING((CASE WHEN CHARINDEX(0x,cast('' AS XML).value('xs:hexBinary(sql:column("hex_Value"))', 'VARBINARY(8000)')) = 0 THEN '0x' ELSE '' END) +cast('' AS XML).value('xs:hexBinary(sql:column("hex_Value"))', 'varchar(max)'),11,LEN(hex_Value)) -- BINARY,VARBINARYEND)END AS FieldValue
,[Rowlogcontents]
,[Row ID]
FROM @ColumnNameAndData ORDER BY nullbit--Create the column name in the same order to do pivot table.DECLARE @FieldName VARCHAR(max)
SET @FieldName = STUFF(
(SELECT ',' + CAST(QUOTENAME([Name]) AS VARCHAR(MAX)) FROM syscolumns WHERE id=object_id('' + @SchemaName_n_TableName + '')FOR XML PATH('')), 1, 1, '')--Finally did pivot table and get the data back in the same format.SET @sql = 'SELECT ' + @FieldName + ' FROM #temp_Data PIVOT (Min([FieldValue]) FOR FieldName IN (' + @FieldName + ')) AS pvt'
EXEC sp_executesql @sqlGO--3.使用函数
exec Recover_Deleted_Data_Proc 'test','dbo.test2'--切换数据库use master--构建函数
Create PROCEDURE Recover_Deleted_Data_Proc@Database_Name NVARCHAR(MAX),@SchemaName_n_TableName NVARCHAR(Max),@Date_From DATETIME='1900/01/01',@Date_To DATETIME ='9999/12/31'AS DECLARE @RowLogContents VARBINARY(8000)DECLARE @TransactionID NVARCHAR(Max)DECLARE @AllocUnitID BIGINTDECLARE @AllocUnitName NVARCHAR(Max)DECLARE @SQL NVARCHAR(Max)DECLARE @Compatibility_Level INT SELECT @Compatibility_Level=dtb.compatibility_levelFROMmaster.sys.databases AS dtb WHERE dtb.name=@Database_Name IF ISNULL(@Compatibility_Level,0)<=80BEGIN RAISERROR('The compatibility level should be equal to or greater SQL SERVER 2005 (90)',16,1) RETURNEND IF (SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES WHERE [TABLE_SCHEMA]+'.'+[TABLE_NAME]=@SchemaName_n_TableName)=0BEGIN RAISERROR('Could not found the table in the defined database',16,1) RETURNEND DECLARE @bitTable TABLE( [ID] INT, [Bitvalue] INT)--Create table to set the bit position of one byte. INSERT INTO @bitTableSELECT 0,2 UNION ALLSELECT 1,2 UNION ALLSELECT 2,4 UNION ALLSELECT 3,8 UNION ALLSELECT 4,16 UNION ALLSELECT 5,32 UNION ALLSELECT 6,64 UNION ALLSELECT 7,128 --Create table to collect the row data.DECLARE @DeletedRecords TABLE( [Row ID] INT IDENTITY(1,1), [RowLogContents] VARBINARY(8000), [AllocUnitID] BIGINT, [Transaction ID] NVARCHAR(Max), [FixedLengthData] SMALLINT, [TotalNoOfCols] SMALLINT, [NullBitMapLength] SMALLINT, [NullBytes] VARBINARY(8000), [TotalNoofVarCols] SMALLINT, [ColumnOffsetArray] VARBINARY(8000), [VarColumnStart] SMALLINT, [Slot ID] INT, [NullBitMap] VARCHAR(MAX) )--Create a common table expression to get all the row data plus how many bytes we have for each row.;WITH RowData AS (SELECT [RowLog Contents 0] AS [RowLogContents] ,[AllocUnitID] AS [AllocUnitID] ,[Transaction ID] AS [Transaction ID] --[Fixed Length Data] = Substring (RowLog content 0, Status Bit A+ Status Bit B + 1,2 bytes),CONVERT(SMALLINT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) AS [FixedLengthData] --@FixedLengthData -- [TotalnoOfCols] = Substring (RowLog content 0, [Fixed Length Data] + 1,2 bytes),CONVERT(INT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], CONVERT(SMALLINT, CONVERT(BINARY(2),REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) + 1, 2)))) as [TotalNoOfCols] --[NullBitMapLength]=ceiling([Total No of Columns] /8.0),CONVERT(INT, ceiling(CONVERT(INT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], CONVERT(SMALLINT, CONVERT(BINARY(2),REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) + 1, 2))))/8.0)) as [NullBitMapLength] --[Null Bytes] = Substring (RowLog content 0, Status Bit A+ Status Bit B + [Fixed Length Data] +1, [NullBitMapLength] ),SUBSTRING([RowLog Contents 0], CONVERT(SMALLINT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) + 3,CONVERT(INT, ceiling(CONVERT(INT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], CONVERT(SMALLINT, CONVERT(BINARY(2),REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) + 1, 2))))/8.0))) as [NullBytes] --[TotalNoofVarCols] = Substring (RowLog content 0, Status Bit A+ Status Bit B + [Fixed Length Data] +1, [Null Bitmap length] + 2 ),(CASE WHEN SUBSTRING([RowLog Contents 0], 1, 1) In (0x10,0x30,0x70) THENCONVERT(INT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0],CONVERT(SMALLINT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) + 3+ CONVERT(INT, ceiling(CONVERT(INT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], CONVERT(SMALLINT, CONVERT(BINARY(2),REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) + 1, 2))))/8.0)), 2)))) ELSE null END) AS [TotalNoofVarCols] --[ColumnOffsetArray]= Substring (RowLog content 0, Status Bit A+ Status Bit B + [Fixed Length Data] +1, [Null Bitmap length] + 2 , [TotalNoofVarCols]*2 ),(CASE WHEN SUBSTRING([RowLog Contents 0], 1, 1) In (0x10,0x30,0x70) THENSUBSTRING([RowLog Contents 0], CONVERT(SMALLINT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) + 3+ CONVERT(INT, ceiling(CONVERT(INT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], CONVERT(SMALLINT, CONVERT(BINARY(2),REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) + 1, 2))))/8.0)) + 2, (CASE WHEN SUBSTRING([RowLog Contents 0], 1, 1) In (0x10,0x30,0x70) THENCONVERT(INT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0],CONVERT(SMALLINT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) + 3+ CONVERT(INT, ceiling(CONVERT(INT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], CONVERT(SMALLINT, CONVERT(BINARY(2),REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) + 1, 2))))/8.0)), 2)))) ELSE null END)* 2) ELSE null END) AS [ColumnOffsetArray] -- Variable column Start = Status Bit A+ Status Bit B + [Fixed Length Data] + [Null Bitmap length] + 2+([TotalNoofVarCols]*2),CASE WHEN SUBSTRING([RowLog Contents 0], 1, 1)In (0x10,0x30,0x70)THEN (CONVERT(SMALLINT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) + 4 + CONVERT(INT, ceiling(CONVERT(INT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], CONVERT(SMALLINT, CONVERT(BINARY(2),REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) + 1, 2))))/8.0)) + ((CASE WHEN SUBSTRING([RowLog Contents 0], 1, 1) In (0x10,0x30,0x70) THENCONVERT(INT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0],CONVERT(SMALLINT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) + 3+ CONVERT(INT, ceiling(CONVERT(INT, CONVERT(BINARY(2), REVERSE(SUBSTRING([RowLog Contents 0], CONVERT(SMALLINT, CONVERT(BINARY(2),REVERSE(SUBSTRING([RowLog Contents 0], 2 + 1, 2)))) + 1, 2))))/8.0)), 2)))) ELSE null END) * 2)) ELSE null End AS [VarColumnStart],[Slot ID]FROM sys.fn_dblog(NULL, NULL)WHEREAllocUnitId IN(SELECT [Allocation_unit_id] FROM sys.allocation_units allocunitsINNER JOIN sys.partitions partitions ON (allocunits.type IN (1, 3) AND partitions.hobt_id = allocunits.container_id) OR (allocunits.type = 2 AND partitions.partition_id = allocunits.container_id) WHERE object_id=object_ID('' + @SchemaName_n_TableName + '')) AND Context IN ('LCX_MARK_AS_GHOST', 'LCX_HEAP') AND Operation in ('LOP_DELETE_ROWS') And SUBSTRING([RowLog Contents 0], 1, 1)In (0x10,0x30,0x70) /*Use this subquery to filter the date*/AND [TRANSACTION ID] IN (SELECT DISTINCT [TRANSACTION ID] FROM sys.fn_dblog(NULL, NULL) WHERE Context IN ('LCX_NULL') AND Operation in ('LOP_BEGIN_XACT') And [Transaction Name] In ('DELETE','user_transaction')And CONVERT(NVARCHAR(11),[Begin Time]) BETWEEN @Date_From AND @Date_To)), --Use this technique to repeate the row till the no of bytes of the row.N1 (n) AS (SELECT 1 UNION ALL SELECT 1),N2 (n) AS (SELECT 1 FROM N1 AS X, N1 AS Y),N3 (n) AS (SELECT 1 FROM N2 AS X, N2 AS Y),N4 (n) AS (SELECT ROW_NUMBER() OVER(ORDER BY X.n) FROM N3 AS X, N3 AS Y) INSERT INTO @DeletedRecordsSELECT RowLogContents ,[AllocUnitID] ,[Transaction ID] ,[FixedLengthData] ,[TotalNoOfCols] ,[NullBitMapLength] ,[NullBytes] ,[TotalNoofVarCols] ,[ColumnOffsetArray] ,[VarColumnStart] ,[Slot ID] ---Get the Null value against each column (1 means null zero means not null) ,[NullBitMap]=(REPLACE(STUFF((SELECT ',' + (CASE WHEN [ID]=0 THEN CONVERT(NVARCHAR(1),(SUBSTRING(NullBytes, n, 1) % 2)) ELSE CONVERT(NVARCHAR(1),((SUBSTRING(NullBytes, n, 1) / [Bitvalue]) % 2)) END) --as [nullBitMap] FROMN4 AS NumsJoin RowData AS C ON n<=NullBitMapLengthCross Join @bitTable WHERE C.[RowLogContents]=D.[RowLogContents] ORDER BY [RowLogContents],n ASC FOR XML PATH('')),1,1,''),',',''))FROM RowData D IF (SELECT COUNT(*) FROM @DeletedRecords)=0BEGIN RAISERROR('There is no data in the log as per the search criteria',16,1) RETURNEND DECLARE @ColumnNameAndData TABLE( [Row ID] int, [Rowlogcontents] varbinary(Max), [NAME] sysname, [nullbit] smallint, [leaf_offset] smallint, [length] smallint, [system_type_id] tinyint, [bitpos] tinyint, [xprec] tinyint, [xscale] tinyint, [is_null] int, [Column value Size]int, [Column Length] int, [hex_Value] varbinary(max), [Slot ID] int, [Update] int) --Create common table expression and join it with the rowdata table-- to get each column details/*This part is for variable data columns*/--@RowLogContents, --(col.columnOffValue - col.columnLength) + 1,--col.columnLength--)INSERT INTO @ColumnNameAndDataSELECT[Row ID],Rowlogcontents,NAME ,cols.leaf_null_bit AS nullbit,leaf_offset,ISNULL(syscolumns.length, cols.max_length) AS [length],cols.system_type_id,cols.leaf_bit_position AS bitpos,ISNULL(syscolumns.xprec, cols.precision) AS xprec,ISNULL(syscolumns.xscale, cols.scale) AS xscale,SUBSTRING([nullBitMap], cols.leaf_null_bit, 1) AS is_null,(CASE WHEN leaf_offset<1 and SUBSTRING([nullBitMap], cols.leaf_null_bit, 1)=0 THEN(Case When CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) >30000THENCONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) - POWER(2, 15)ELSECONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2))))END)END) AS [Column value Size], (CASE WHEN leaf_offset<1 and SUBSTRING([nullBitMap], cols.leaf_null_bit, 1)=0 THEN(Case When CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) >30000 AndISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])<30000THEN (Case When [System_type_id]In (35,34,99) Then 16 else 24 end) When CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) >30000 AndISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])>30000THEN (Case When [System_type_id]In (35,34,99) Then 16 else 24 end) --24 When CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) <30000 AndISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])<30000THEN (CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2))))- ISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])) When CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) <30000 AndISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])>30000 THEN POWER(2, 15) +CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2))))- ISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart]) END) END) AS [Column Length] ,(CASE WHEN SUBSTRING([nullBitMap], cols.leaf_null_bit, 1)=1 THEN NULL ELSE SUBSTRING ( Rowlogcontents, ( (Case When CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) >30000THENCONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) - POWER(2, 15)ELSECONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2))))END) - (Case When CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) >30000 AndISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])<30000 THEN (Case When [System_type_id]In (35,34,99) Then 16 else 24 end) --24 When CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) >30000 AndISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])>30000 THEN (Case When [System_type_id]In (35,34,99) Then 16 else 24 end) --24 When CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) <30000 AndISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])<30000 THEN CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2))))- ISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart]) When CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) <30000 AndISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])>30000 THEN POWER(2, 15) +CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2))))- ISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart]) END) ) + 1,(Case When CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) >30000 AndISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])<30000 THEN (Case When [System_type_id] In (35,34,99) Then 16 else 24 end) --24 When CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) >30000 AndISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])>30000 THEN (Case When [System_type_id] In (35,34,99) Then 16 else 24 end) --24 When CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) <30000 AndISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])<30000 THEN ABS(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2))))- ISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])) When CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2)))) <30000 AndISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart])>30000 THEN POWER(2, 15) +CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * leaf_offset*-1) - 1, 2))))- ISNULL(NULLIF(CONVERT(INT, CONVERT(BINARY(2), REVERSE (SUBSTRING ([ColumnOffsetArray], (2 * ((leaf_offset*-1) - 1)) - 1, 2)))), 0), [varColumnStart]) END)) END) AS hex_Value,[Slot ID],0FROM @DeletedRecords AInner Join sys.allocation_units allocunits On A.[AllocUnitId]=allocunits.[Allocation_Unit_Id]INNER JOIN sys.partitions partitions ON (allocunits.type IN (1, 3)AND partitions.hobt_id = allocunits.container_id) OR (allocunits.type = 2 AND partitions.partition_id = allocunits.container_id)INNER JOIN sys.system_internals_partition_columns cols ON cols.partition_id = partitions.partition_idLEFT OUTER JOIN syscolumns ON syscolumns.id = partitions.object_id AND syscolumns.colid = cols.partition_column_idWHERE leaf_offset<0UNION/*This part is for fixed data columns*/SELECT [Row ID],Rowlogcontents,NAME ,cols.leaf_null_bit AS nullbit,leaf_offset,ISNULL(syscolumns.length, cols.max_length) AS [length],cols.system_type_id,cols.leaf_bit_position AS bitpos,ISNULL(syscolumns.xprec, cols.precision) AS xprec,ISNULL(syscolumns.xscale, cols.scale) AS xscale,SUBSTRING([nullBitMap], cols.leaf_null_bit, 1) AS is_null,(SELECT TOP 1 ISNULL(SUM(CASE WHEN C.leaf_offset >1 THEN max_length ELSE 0 END),0) FROMsys.system_internals_partition_columns C WHERE cols.partition_id =C.partition_id And C.leaf_null_bit<cols.leaf_null_bit)+5 AS [Column value Size],syscolumns.length AS [Column Length] ,CASE WHEN SUBSTRING([nullBitMap], cols.leaf_null_bit, 1)=1 THEN NULL ELSESUBSTRING(Rowlogcontents,(SELECT TOP 1 ISNULL(SUM(CASE WHEN C.leaf_offset >1 And C.leaf_bit_position=0 THEN max_length ELSE 0 END),0) FROMsys.system_internals_partition_columns C where cols.partition_id =C.partition_id And C.leaf_null_bit<cols.leaf_null_bit)+5,syscolumns.length) END AS hex_Value,[Slot ID],0FROM @DeletedRecords AInner Join sys.allocation_units allocunits ON A.[AllocUnitId]=allocunits.[Allocation_Unit_Id]INNER JOIN sys.partitions partitions ON (allocunits.type IN (1, 3)AND partitions.hobt_id = allocunits.container_id) OR (allocunits.type = 2 AND partitions.partition_id = allocunits.container_id)INNER JOIN sys.system_internals_partition_columns cols ON cols.partition_id = partitions.partition_idLEFT OUTER JOIN syscolumns ON syscolumns.id = partitions.object_id AND syscolumns.colid = cols.partition_column_idWHERE leaf_offset>0Order By nullbit Declare @BitColumnByte as intSelect @BitColumnByte=CONVERT(INT, ceiling( Count(*)/8.0)) from @ColumnNameAndData Where [System_Type_id]=104 ;With N1 (n) AS (SELECT 1 UNION ALL SELECT 1),N2 (n) AS (SELECT 1 FROM N1 AS X, N1 AS Y),N3 (n) AS (SELECT 1 FROM N2 AS X, N2 AS Y),N4 (n) AS (SELECT ROW_NUMBER() OVER(ORDER BY X.n) FROM N3 AS X, N3 AS Y),CTE As(Select RowLogContents,[nullbit] ,[BitMap]=Convert(varbinary(1),Convert(int,Substring((REPLACE(STUFF((SELECT ',' + (CASE WHEN [ID]=0 THEN CONVERT(NVARCHAR(1),(SUBSTRING(hex_Value, n, 1) % 2)) ELSE CONVERT(NVARCHAR(1),((SUBSTRING(hex_Value, n, 1) / [Bitvalue]) % 2)) END) --as [nullBitMap] from N4 AS NumsJoin @ColumnNameAndData AS C ON n<=@BitColumnByte And [System_Type_id]=104 And bitpos=0Cross Join @bitTable WHERE C.[RowLogContents]=D.[RowLogContents] ORDER BY [RowLogContents],n ASC FOR XML PATH('')),1,1,''),',','')),bitpos+1,1)))FROM @ColumnNameAndData D Where [System_Type_id]=104) Update A Set [hex_Value]=[BitMap]from @ColumnNameAndData AInner Join CTE B On A.[RowLogContents]=B.[RowLogContents]And A.[nullbit]=B.[nullbit] /**************Check for BLOB DATA TYPES******************************/DECLARE @Fileid INTDECLARE @Pageid INTDECLARE @Slotid INTDECLARE @CurrentLSN INTDECLARE @LinkID INTDECLARE @Context VARCHAR(50)DECLARE @ConsolidatedPageID VARCHAR(MAX)DECLARE @LCX_TEXT_MIX VARBINARY(MAX) declare @temppagedata table([ParentObject] sysname,[Object] sysname,[Field] sysname,[Value] sysname) declare @pagedata table([Page ID] sysname,[File IDS] int,[Page IDS] int,[AllocUnitId] bigint,[ParentObject] sysname,[Object] sysname,[Field] sysname,[Value] sysname) DECLARE @ModifiedRawData TABLE( [ID] INT IDENTITY(1,1), [PAGE ID] VARCHAR(MAX), [FILE IDS] INT, [PAGE IDS] INT, [Slot ID] INT, [AllocUnitId] BIGINT, [RowLog Contents 0_var] VARCHAR(Max), [RowLog Length] VARCHAR(50), [RowLog Len] INT, [RowLog Contents 0] VARBINARY(Max), [Link ID] INT default (0), [Update] INT) DECLARE Page_Data_Cursor CURSOR FOR /*We need to filter LOP_MODIFY_ROW,LOP_MODIFY_COLUMNS from log for deleted records of BLOB data type& Get its Slot No, Page ID & AllocUnit ID*/ SELECT LTRIM(RTRIM(Replace([Description],'Deallocated',''))) AS [PAGE ID] ,[Slot ID],[AllocUnitId],NULL AS [RowLog Contents 0],NULL AS [RowLog Contents 0],Context FROM sys.fn_dblog(NULL, NULL) WHERE AllocUnitId IN (SELECT [Allocation_unit_id] FROM sys.allocation_units allocunits INNER JOIN sys.partitions partitions ON (allocunits.type IN (1, 3) AND partitions.hobt_id = allocunits.container_id) OR (allocunits.type = 2 AND partitions.partition_id = allocunits.container_id) WHERE object_id=object_ID('' + @SchemaName_n_TableName + '')) AND Operation IN ('LOP_MODIFY_ROW') AND [Context] IN ('LCX_PFS') AND Description Like '%Deallocated%' /*Use this subquery to filter the date*/ AND [TRANSACTION ID] IN (SELECT DISTINCT [TRANSACTION ID] FROM sys.fn_dblog(NULL, NULL) WHERE Context IN ('LCX_NULL') AND Operation in ('LOP_BEGIN_XACT') AND [Transaction Name]='DELETE' AND CONVERT(NVARCHAR(11),[Begin Time]) BETWEEN @Date_From AND @Date_To) GROUP BY [Description],[Slot ID],[AllocUnitId],Context UNION SELECT [PAGE ID],[Slot ID],[AllocUnitId] ,Substring([RowLog Contents 0],15,LEN([RowLog Contents 0])) AS [RowLog Contents 0] ,CONVERT(INT,Substring([RowLog Contents 0],7,2)),Context --,CAST(RIGHT([Current LSN],4) AS INT) AS [Current LSN] FROM sys.fn_dblog(NULL, NULL) WHERE AllocUnitId IN (SELECT [Allocation_unit_id] FROM sys.allocation_units allocunits INNER JOIN sys.partitions partitions ON (allocunits.type IN (1, 3) AND partitions.hobt_id = allocunits.container_id) OR (allocunits.type = 2 AND partitions.partition_id = allocunits.container_id) WHERE object_id=object_ID('' + @SchemaName_n_TableName + '')) AND Context IN ('LCX_TEXT_MIX') AND Operation in ('LOP_DELETE_ROWS') /*Use this subquery to filter the date*/ AND [TRANSACTION ID] IN (SELECT DISTINCT [TRANSACTION ID] FROM sys.fn_dblog(NULL, NULL) WHERE Context IN ('LCX_NULL') AND Operation in ('LOP_BEGIN_XACT') And [Transaction Name]='DELETE' And CONVERT(NVARCHAR(11),[Begin Time]) BETWEEN @Date_From AND @Date_To) /****************************************/ OPEN Page_Data_Cursor FETCH NEXT FROM Page_Data_Cursor INTO @ConsolidatedPageID, @Slotid,@AllocUnitID,@LCX_TEXT_MIX,@LinkID,@Context WHILE @@FETCH_STATUS = 0 BEGIN DECLARE @hex_pageid AS VARCHAR(Max) /*Page ID contains File Number and page number It looks like 0001:00000130. In this example 0001 is file Number & 00000130 is Page Number & These numbers are in Hex format*/ SET @Fileid=SUBSTRING(@ConsolidatedPageID,0,CHARINDEX(':',@ConsolidatedPageID)) -- Seperate File ID from Page ID SET @hex_pageid ='0x'+ SUBSTRING(@ConsolidatedPageID,CHARINDEX(':',@ConsolidatedPageID)+1,Len(@ConsolidatedPageID)) ---Seperate the page ID SELECT @Pageid=Convert(INT,cast('' AS XML).value('xs:hexBinary(substring(sql:variable("@hex_pageid"),sql:column("t.pos")) )', 'varbinary(max)')) -- Convert Page ID from hex to integer FROM (SELECT CASE substring(@hex_pageid, 1, 2) WHEN '0x' THEN 3 ELSE 0 END) AS t(pos) IF @Context='LCX_PFS' BEGIN DELETE @temppagedata INSERT INTO @temppagedata EXEC( 'DBCC PAGE(' + @DataBase_Name + ', ' + @fileid + ', ' + @pageid + ', 1) with tableresults,no_infomsgs;'); INSERT INTO @pagedata SELECT @ConsolidatedPageID,@fileid,@pageid,@AllocUnitID,[ParentObject],[Object],[Field] ,[Value] FROM @temppagedata END ELSE IF @Context='LCX_TEXT_MIX' BEGIN INSERT INTO @ModifiedRawData SELECT @ConsolidatedPageID,@fileid,@pageid,@Slotid,@AllocUnitID,NULL,0,CONVERT(INT,CONVERT(VARBINARY,REVERSE(SUBSTRING(@LCX_TEXT_MIX,11,2)))),@LCX_TEXT_MIX,@LinkID,0 END FETCH NEXT FROM Page_Data_Cursor INTO @ConsolidatedPageID, @Slotid,@AllocUnitID,@LCX_TEXT_MIX,@LinkID,@Context END CLOSE Page_Data_Cursor DEALLOCATE Page_Data_Cursor DECLARE @Newhexstring VARCHAR(MAX); --The data is in multiple rows in the page, so we need to convert it into one row as a single hex value. --This hex value is in string format INSERT INTO @ModifiedRawData ([PAGE ID],[FILE IDS],[PAGE IDS],[Slot ID],[AllocUnitId] ,[RowLog Contents 0_var] , [RowLog Length]) SELECT [Page ID],[FILE IDS],[PAGE IDS],Substring([ParentObject],CHARINDEX('Slot', [ParentObject])+4, (CHARINDEX('Offset', [ParentObject])-(CHARINDEX('Slot', [ParentObject])+4))-2 ) as [Slot ID] ,[AllocUnitId] ,Substring(( SELECT REPLACE(STUFF((SELECT REPLACE(SUBSTRING([Value],CHARINDEX(':',[Value])+1,CHARINDEX('†',[Value])-CHARINDEX(':',[Value])),'†','') FROM @pagedata C WHERE B.[Page ID]= C.[Page ID] And Substring(B.[ParentObject],CHARINDEX('Slot', B.[ParentObject])+4, (CHARINDEX('Offset', B.[ParentObject])-(CHARINDEX('Slot', B.[ParentObject])+4)) )=Substring(C.[ParentObject],CHARINDEX('Slot', C.[ParentObject])+4, (CHARINDEX('Offset', C.[ParentObject])-(CHARINDEX('Slot', C.[ParentObject])+4)) ) And [Object] Like '%Memory Dump%' Order By '0x'+ LEFT([Value],CHARINDEX(':',[Value])-1) FOR XML PATH('') ),1,1,'') ,' ','') ),1,20000) AS [Value] , Substring(( SELECT '0x' +REPLACE(STUFF((SELECT REPLACE(SUBSTRING([Value],CHARINDEX(':',[Value])+1,CHARINDEX('†',[Value])-CHARINDEX(':',[Value])),'†','') FROM @pagedata C WHERE B.[Page ID]= C.[Page ID] And Substring(B.[ParentObject],CHARINDEX('Slot', B.[ParentObject])+4, (CHARINDEX('Offset', B.[ParentObject])-(CHARINDEX('Slot', B.[ParentObject])+4)) )=Substring(C.[ParentObject],CHARINDEX('Slot', C.[ParentObject])+4, (CHARINDEX('Offset', C.[ParentObject])-(CHARINDEX('Slot', C.[ParentObject])+4)) ) And [Object] Like '%Memory Dump%' Order By '0x'+ LEFT([Value],CHARINDEX(':',[Value])-1) FOR XML PATH('') ),1,1,'') ,' ','') ),7,4) AS [Length] From @pagedata B Where [Object] Like '%Memory Dump%' Group By [Page ID],[FILE IDS],[PAGE IDS],[ParentObject],[AllocUnitId]--,[Current LSN] Order By [Slot ID] UPDATE @ModifiedRawData SET [RowLog Len] = CONVERT(VARBINARY(8000),REVERSE(cast('' AS XML).value('xs:hexBinary(substring(sql:column("[RowLog Length]"),0))', 'varbinary(Max)'))) FROM @ModifiedRawData Where [LINK ID]=0 UPDATE @ModifiedRawData SET [RowLog Contents 0] =cast('' AS XML).value('xs:hexBinary(substring(sql:column("[RowLog Contents 0_var]"),0))', 'varbinary(Max)') FROM @ModifiedRawData Where [LINK ID]=0 Update B Set B.[RowLog Contents 0] = (CASE WHEN A.[RowLog Contents 0] IS NOT NULL AND C.[RowLog Contents 0] IS NOT NULL THEN A.[RowLog Contents 0]+C.[RowLog Contents 0] WHEN A.[RowLog Contents 0] IS NULL AND C.[RowLog Contents 0] IS NOT NULL THEN C.[RowLog Contents 0] WHEN A.[RowLog Contents 0] IS NOT NULL AND C.[RowLog Contents 0] IS NULL THEN A.[RowLog Contents 0] END) ,B.[Update]=ISNULL(B.[Update],0)+1 from @ModifiedRawData B LEFT Join @ModifiedRawData A On A.[Page IDS]=Convert(int,Convert(Varbinary(Max),Reverse(Substring(B.[RowLog Contents 0],15+14,2)))) And A.[File IDS]=Convert(int,Convert(Varbinary(Max),Reverse(Substring(B.[RowLog Contents 0],19+14,2)))) And A.[Link ID]=B.[Link ID] LEFT Join @ModifiedRawData C On C.[Page IDS]=Convert(int,Convert(Varbinary(Max),Reverse(Substring(B.[RowLog Contents 0],27+14,2)))) And C.[File IDS]=Convert(int,Convert(Varbinary(Max),Reverse(Substring(B.[RowLog Contents 0],31+14,2)))) And C.[Link ID]=B.[Link ID] Where (A.[RowLog Contents 0] IS NOT NULL OR C.[RowLog Contents 0] IS NOT NULL) Update B Set B.[RowLog Contents 0] = (CASE WHEN A.[RowLog Contents 0] IS NOT NULL AND C.[RowLog Contents 0] IS NOT NULL THEN A.[RowLog Contents 0]+C.[RowLog Contents 0] WHEN A.[RowLog Contents 0] IS NULL AND C.[RowLog Contents 0] IS NOT NULL THEN C.[RowLog Contents 0] WHEN A.[RowLog Contents 0] IS NOT NULL AND C.[RowLog Contents 0] IS NULL THEN A.[RowLog Contents 0] END) --,B.[Update]=ISNULL(B.[Update],0)+1 from @ModifiedRawData B LEFT Join @ModifiedRawData A On A.[Page IDS]=Convert(int,Convert(Varbinary(Max),Reverse(Substring(B.[RowLog Contents 0],15+14,2)))) And A.[File IDS]=Convert(int,Convert(Varbinary(Max),Reverse(Substring(B.[RowLog Contents 0],19+14,2)))) And A.[Link ID]<>B.[Link ID] And B.[Update]=0 LEFT Join @ModifiedRawData C On C.[Page IDS]=Convert(int,Convert(Varbinary(Max),Reverse(Substring(B.[RowLog Contents 0],27+14,2)))) And C.[File IDS]=Convert(int,Convert(Varbinary(Max),Reverse(Substring(B.[RowLog Contents 0],31+14,2)))) And C.[Link ID]<>B.[Link ID] And B.[Update]=0 Where (A.[RowLog Contents 0] IS NOT NULL OR C.[RowLog Contents 0] IS NOT NULL) UPDATE @ModifiedRawData SET [RowLog Contents 0] = (Case When [RowLog Len]>=8000 Then Substring([RowLog Contents 0] ,15,[RowLog Len]) When [RowLog Len]<8000 Then SUBSTRING([RowLog Contents 0],15+6,Convert(int,Convert(varbinary(max),REVERSE(Substring([RowLog Contents 0],15,6))))) End) FROM @ModifiedRawData Where [LINK ID]=0 UPDATE @ColumnNameAndData SET [hex_Value]=[RowLog Contents 0] --,A.[Update]=A.[Update]+1 FROM @ColumnNameAndData A INNER JOIN @ModifiedRawData B ON Convert(int,Convert(Varbinary(Max),Reverse(Substring([hex_value],17,4))))=[PAGE IDS] AND Convert(int,Substring([hex_value],9,2)) =B.[Link ID] Where [System_Type_Id] In (99,167,175,231,239,241,165,98) And [Link ID] <>0 UPDATE @ColumnNameAndData SET [hex_Value]= (CASE WHEN B.[RowLog Contents 0] IS NOT NULL AND C.[RowLog Contents 0] IS NOT NULL THEN B.[RowLog Contents 0]+C.[RowLog Contents 0] WHEN B.[RowLog Contents 0] IS NULL AND C.[RowLog Contents 0] IS NOT NULL THEN C.[RowLog Contents 0] WHEN B.[RowLog Contents 0] IS NOT NULL AND C.[RowLog Contents 0] IS NULL THEN B.[RowLog Contents 0] END) --,A.[Update]=A.[Update]+1 FROM @ColumnNameAndData A LEFT JOIN @ModifiedRawData B ON Convert(int,Convert(Varbinary(Max),Reverse(Substring([hex_value],5,4))))=B.[PAGE IDS] And B.[Link ID] =0 LEFT JOIN @ModifiedRawData C ON Convert(int,Convert(Varbinary(Max),Reverse(Substring([hex_value],17,4))))=C.[PAGE IDS] And C.[Link ID] =0 Where [System_Type_Id] In (99,167,175,231,239,241,165,98) And (B.[RowLog Contents 0] IS NOT NULL OR C.[RowLog Contents 0] IS NOT NULL) UPDATE @ColumnNameAndData SET [hex_Value]=[RowLog Contents 0] --,A.[Update]=A.[Update]+1 FROM @ColumnNameAndData A INNER JOIN @ModifiedRawData B ON Convert(int,Convert(Varbinary(Max),Reverse(Substring([hex_value],9,4))))=[PAGE IDS] And Convert(int,Substring([hex_value],3,2))=[Link ID] Where [System_Type_Id] In (35,34,99) And [Link ID] <>0 UPDATE @ColumnNameAndData SET [hex_Value]=[RowLog Contents 0] --,A.[Update]=A.[Update]+10 FROM @ColumnNameAndData A INNER JOIN @ModifiedRawData B ON Convert(int,Convert(Varbinary(Max),Reverse(Substring([hex_value],9,4))))=[PAGE IDS] Where [System_Type_Id] In (35,34,99) And [Link ID] =0 UPDATE @ColumnNameAndData SET [hex_Value]=[RowLog Contents 0] --,A.[Update]=A.[Update]+1 FROM @ColumnNameAndData A INNER JOIN @ModifiedRawData B ON Convert(int,Convert(Varbinary(Max),Reverse(Substring([hex_value],15,4))))=[PAGE IDS] Where [System_Type_Id] In (35,34,99) And [Link ID] =0 Update @ColumnNameAndData set [hex_value]= 0xFFFE + Substring([hex_value],9,LEN([hex_value])) --,[Update]=[Update]+1 Where [system_type_id]=241 CREATE TABLE [#temp_Data]( [FieldName] VARCHAR(MAX), [FieldValue] NVARCHAR(MAX), [Rowlogcontents] VARBINARY(8000), [Row ID] int) INSERT INTO #temp_DataSELECT NAME,CASE WHEN system_type_id IN (231, 239) THEN LTRIM(RTRIM(CONVERT(NVARCHAR(max),hex_Value))) --NVARCHAR ,NCHAR WHEN system_type_id IN (167,175) THEN LTRIM(RTRIM(CONVERT(VARCHAR(max),hex_Value))) --VARCHAR,CHAR WHEN system_type_id IN (35) THEN LTRIM(RTRIM(CONVERT(VARCHAR(max),hex_Value))) --Text WHEN system_type_id IN (99) THEN LTRIM(RTRIM(CONVERT(NVARCHAR(max),hex_Value))) --nText WHEN system_type_id = 48 THEN CONVERT(VARCHAR(MAX), CONVERT(TINYINT, CONVERT(BINARY(1), REVERSE (hex_Value)))) --TINY INTEGER WHEN system_type_id = 52 THEN CONVERT(VARCHAR(MAX), CONVERT(SMALLINT, CONVERT(BINARY(2), REVERSE (hex_Value)))) --SMALL INTEGER WHEN system_type_id = 56 THEN CONVERT(VARCHAR(MAX), CONVERT(INT, CONVERT(BINARY(4), REVERSE(hex_Value)))) -- INTEGER WHEN system_type_id = 127 THEN CONVERT(VARCHAR(MAX), CONVERT(BIGINT, CONVERT(BINARY(8), REVERSE(hex_Value))))-- BIG INTEGER WHEN system_type_id = 61 Then CONVERT(VARCHAR(MAX),CONVERT(DATETIME,CONVERT(VARBINARY(8000),REVERSE (hex_Value))),100) --DATETIME WHEN system_type_id =58 Then CONVERT(VARCHAR(MAX),CONVERT(SMALLDATETIME,CONVERT(VARBINARY(8000),REVERSE(hex_Value))),100) --SMALL DATETIME WHEN system_type_id = 108 THEN CONVERT(VARCHAR(MAX),CONVERT(NUMERIC(38,20), CONVERT(VARBINARY,CONVERT(VARBINARY(1),xprec)+CONVERT(VARBINARY(1),xscale))+CONVERT(VARBINARY(1),0) + hex_Value)) --- NUMERIC WHEN system_type_id =106 THEN CONVERT(VARCHAR(MAX), CONVERT(DECIMAL(38,20), CONVERT(VARBINARY,Convert(VARBINARY(1),xprec)+CONVERT(VARBINARY(1),xscale))+CONVERT(VARBINARY(1),0) + hex_Value)) --- DECIMAL WHEN system_type_id In(60,122) THEN CONVERT(VARCHAR(MAX),Convert(MONEY,Convert(VARBINARY(8000),Reverse(hex_Value))),2) --MONEY,SMALLMONEY WHEN system_type_id = 104 THEN CONVERT(VARCHAR(MAX),CONVERT (BIT,CONVERT(BINARY(1), hex_Value)%2)) -- BIT WHEN system_type_id =62 THEN RTRIM(LTRIM(STR(CONVERT(FLOAT,SIGN(CAST(CONVERT(VARBINARY(8000),Reverse(hex_Value)) AS BIGINT)) * (1.0 + (CAST(CONVERT(VARBINARY(8000),Reverse(hex_Value)) AS BIGINT) & 0x000FFFFFFFFFFFFF) * POWER(CAST(2 AS FLOAT), -52)) * POWER(CAST(2 AS FLOAT),((CAST(CONVERT(VARBINARY(8000),Reverse(hex_Value)) AS BIGINT) & 0x7ff0000000000000) / EXP(52 * LOG(2))-1023))),53,LEN(hex_Value)))) --- FLOAT When system_type_id =59 THEN Left(LTRIM(STR(CAST(SIGN(CAST(Convert(VARBINARY(8000),REVERSE(hex_Value)) AS BIGINT))* (1.0 + (CAST(CONVERT(VARBINARY(8000),Reverse(hex_Value)) AS BIGINT) & 0x007FFFFF) * POWER(CAST(2 AS Real), -23)) * POWER(CAST(2 AS Real),(((CAST(CONVERT(VARBINARY(8000),Reverse(hex_Value)) AS INT) )& 0x7f800000)/ EXP(23 * LOG(2))-127))AS REAL),23,23)),8) --Real WHEN system_type_id In (165,173) THEN (CASE WHEN CHARINDEX(0x,cast('' AS XML).value('xs:hexBinary(sql:column("hex_Value"))', 'VARBINARY(8000)')) = 0 THEN '0x' ELSE '' END) +cast('' AS XML).value('xs:hexBinary(sql:column("hex_Value"))', 'varchar(max)') -- BINARY,VARBINARY WHEN system_type_id =34 THEN (CASE WHEN CHARINDEX(0x,cast('' AS XML).value('xs:hexBinary(sql:column("hex_Value"))', 'VARBINARY(8000)')) = 0 THEN '0x' ELSE '' END) +cast('' AS XML).value('xs:hexBinary(sql:column("hex_Value"))', 'varchar(max)') --IMAGE WHEN system_type_id =36 THEN CONVERT(VARCHAR(MAX),CONVERT(UNIQUEIDENTIFIER,hex_Value)) --UNIQUEIDENTIFIER WHEN system_type_id =231 THEN CONVERT(VARCHAR(MAX),CONVERT(sysname,hex_Value)) --SYSNAME WHEN system_type_id =241 THEN CONVERT(VARCHAR(MAX),CONVERT(xml,hex_Value)) --XML WHEN system_type_id =189 THEN (CASE WHEN CHARINDEX(0x,cast('' AS XML).value('xs:hexBinary(sql:column("hex_Value"))', 'VARBINARY(8000)')) = 0 THEN '0x' ELSE '' END) +cast('' AS XML).value('xs:hexBinary(sql:column("hex_Value"))', 'varchar(max)') --TIMESTAMP WHEN system_type_id=98 THEN (CASE WHEN CONVERT(INT,SUBSTRING(hex_Value,1,1))=56 THEN CONVERT(VARCHAR(MAX), CONVERT(INT, CONVERT(BINARY(4), REVERSE(Substring(hex_Value,3,Len(hex_Value)))))) -- INTEGER WHEN CONVERT(INT,SUBSTRING(hex_Value,1,1))=108 THEN CONVERT(VARCHAR(MAX),CONVERT(numeric(38,20),CONVERT(VARBINARY(1),Substring(hex_Value,3,1)) +CONVERT(VARBINARY(1),Substring(hex_Value,4,1))+CONVERT(VARBINARY(1),0) + Substring(hex_Value,5,Len(hex_Value)))) --- NUMERIC WHEN CONVERT(INT,SUBSTRING(hex_Value,1,1))=167 THEN LTRIM(RTRIM(CONVERT(VARCHAR(max),Substring(hex_Value,9,Len(hex_Value))))) --VARCHAR,CHAR WHEN CONVERT(INT,SUBSTRING(hex_Value,1,1))=36 THEN CONVERT(VARCHAR(MAX),CONVERT(UNIQUEIDENTIFIER,Substring((hex_Value),3,20))) --UNIQUEIDENTIFIER WHEN CONVERT(INT,SUBSTRING(hex_Value,1,1))=61 THEN CONVERT(VARCHAR(MAX),CONVERT(DATETIME,CONVERT(VARBINARY(8000),REVERSE (Substring(hex_Value,3,LEN(hex_Value)) ))),100) --DATETIME WHEN CONVERT(INT,SUBSTRING(hex_Value,1,1))=165 THEN '0x'+ SUBSTRING((CASE WHEN CHARINDEX(0x,cast('' AS XML).value('xs:hexBinary(sql:column("hex_Value"))', 'VARBINARY(8000)')) = 0 THEN '0x' ELSE '' END) +cast('' AS XML).value('xs:hexBinary(sql:column("hex_Value"))', 'varchar(max)'),11,LEN(hex_Value)) -- BINARY,VARBINARY END) END AS FieldValue,[Rowlogcontents],[Row ID]FROM @ColumnNameAndData ORDER BY nullbit --Create the column name in the same order to do pivot table. DECLARE @FieldName VARCHAR(max)SET @FieldName = STUFF(( SELECT ',' + CAST(QUOTENAME([Name]) AS VARCHAR(MAX)) FROM syscolumns WHERE id=object_id('' + @SchemaName_n_TableName + '') FOR XML PATH('')), 1, 1, '') --Finally did pivot table and get the data back in the same format. SET @sql = 'SELECT ' + @FieldName + ' FROM #temp_Data PIVOT (Min([FieldValue]) FOR FieldName IN (' + @FieldName + ')) AS pvt'EXEC sp_executesql @sql GO
--3.使用函数exec Recover_Deleted_Data_Proc 'test','dbo.test2'
转载于:https://www.cnblogs.com/gered/p/10688465.html
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