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How to Reset Identity Column Value In SQL Server without Delete Records.

, 17 Dec 2010 CPOL
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You have deleted some records from different record position from your identity column table and you wan to reset it without delete records.
Remove foreign key reference (if any) from YourTabe and set Is Identity to No in column properties windows in Microsoft SQL Server Management Studio. Execute the bellow SQL using Management Studio.
USE YourDataBase
SELECT [YourTableId],ROW_NUMBER() OVER (ORDER BY YourTableId ) AS RowNumber
    into #tempTable from [YourTable]
DECLARE your_table_cursor CURSOR FOR
    SELECT [YourTableId], RowNumber
    FROM #tempTable
OPEN your_table_cursor
DECLARE @YourTableId int
DECLARE @RowNumber int
FETCH NEXT FROM your_table_cursor
INTO @YourTableId, @RowNumber
    UPDATE  [YourTable]
        SET [YourTableId] = @RowNumber
        WHERE [YourTableId] = @YourTableId
    FETCH NEXT FROM your_table_cursor
    INTO @YourTableId, @RowNumber

CLOSE your_table_cursor
DEALLOCATE your_table_cursor
DROP TABLE #tempTable 
Set Is Identity to Yes and set Identity increment to 1 and Identity Seed to 1 in column properties windows in Management Studio. Then set reference.


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GeneralReason for my vote of 2 See alternative PinmemberEskern18-Dec-10 23:12 

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