通过SQL存储过程更新具有连续数字的表的Identity Column

Question

从表中删除重复记录后，我想更新表的 Identity 列，其连续编号从 1 开始。这是我的表详细信息

id(identity(1,1)),
EmployeeID(int),
Punch_Time(datetime),
Deviceid(int)

我需要通过存储过程执行此操作。当我在存储过程中尝试以下语句时

DECLARE @myVar int
        SET @myVar = 0
        set identity_insert TempTrans_Raw# ON
        UPDATE  TempTrans_Raw# SET  @myvar = Id = @myVar + 1
        set identity_insert TempTrans_Raw# off

出现错误，例如...无法更新标识列“Id”任何人请建议如何使用从 1 开始的连续编号来更新该表的标识列。

Answer 1

--before running this make sure Foreign key constraints have been removed that reference the ID. 

--insert everything into a temp table
SELECT (ColumnList) --except identity column
INTO #tmpYourTable
FROM yourTable

--clear your table
DELETE FROM yourTable
-- reseed identity
DBCC CHECKIDENT('table', RESEED, new reseed value)
--insert back all the values 
INSERT INTO yourTable (ColumnList)
SELECT OtherCols FROM #tmpYourTable
--drop the temp table
DROP TABLE #tmpYourTable
GO