SQL Server 重置所有表的标识增量

Question

基本上我需要将所有表的 Identity Increment 重置为其原始值。
在这里，我尝试了一些代码，但失败了。

http://pastebin.com/KSyvtK5b

来自链接的实际代码:

USE World00_Character
GO

-- Create a cursor to loop through the System Ojects and get each table name
DECLARE TBL_CURSOR CURSOR
-- Declare the SQL Statement to cursor through
FOR ( SELECT Name FROM Sysobjects WHERE Type='U' )

-- Declare the @SQL Variable which will hold our dynamic sql
DECLARE @SQL NVARCHAR(MAX);
SET @SQL = '';
-- Declare the @TblName Variable which will hold the name of the current table
DECLARE @TblName NVARCHAR(MAX);

-- Open the Cursor
OPEN TBL_CURSOR

-- Setup the Fetch While that will loop through our cursor and set @TblName
FETCH NEXT FROM TBL_CURSOR INTO @TblName
-- Do this while we are not at the end of the record set
WHILE (@@FETCH_STATUS <> -1)
BEGIN
-- Appeand this table's select count statement to our sql variable
SET @SQL = @SQL + ' ( SELECT '''+@TblName+''' AS Table_Name,COUNT(*) AS Count FROM '+@TblName+' ) UNION';

-- Delete info
EXEC('DBCC CHECKIDENT ('+@TblName+',RESEED,(SELECT IDENT_SEED('+@TblName+')))');

-- Pull the next record
FETCH NEXT FROM TBL_CURSOR INTO @TblName
-- End the Cursor Loop
END

-- Close and Clean Up the Cursor
CLOSE TBL_CURSOR
DEALLOCATE TBL_CURSOR

-- Since we were adding the UNION at the end of each part, the last query will have
-- an extra UNION. Lets  trim it off.
SET @SQL = LEFT(@SQL,LEN(@SQL)-6);

-- Lets do an Order By. You can pick between Count and Table Name by picking which
-- line to execute below.
SET @SQL = @SQL + ' ORDER BY Count';
--SET @SQL = @SQL + ' ORDER BY Table_Name';

-- Now that our Dynamic SQL statement is ready, lets execute it.
EXEC (@SQL);
GO

错误信息:

Error: Msg 102, Level 15, State 1, Line 1 Incorrect syntax near '('.

如何修复该 SQL 或将所有表的标识重置为其原始值？

Answer 1

你有很多没有种子和增量 1 的表吗？

如果没有(默认情况下，所有表都有)，请使用以下代码:

exec sp_MSforeachtable @command1 = 'DBCC CHECKIDENT(''?'', RESEED, 1)'

MSforeachtable是一个未公开但非常方便的存储过程，它对数据库中的所有表执行给定的命令。

如果您需要绝对准确，请使用此语句 - 它会生成一个 SQL 语句列表，以将所有表重新设定为其原始 SEED 值:

SELECT 
    IDENT_SEED(TABLE_NAME) AS Seed,
    IDENT_INCR(TABLE_NAME) AS Increment,
    IDENT_CURRENT(TABLE_NAME) AS Current_Identity,
    TABLE_NAME,
    'DBCC CHECKIDENT(' + TABLE_NAME + ', RESEED, ' + CAST(IDENT_SEED(TABLE_NAME) AS VARCHAR(10)) + ')'
FROM 
    INFORMATION_SCHEMA.TABLES
WHERE 
    OBJECTPROPERTY(OBJECT_ID(TABLE_NAME), 'TableHasIdentity') = 1
    AND TABLE_TYPE = 'BASE TABLE'

获取输出中的最后一列，然后执行这些语句，就大功告成了! :-)

(灵感来自 Pinal Dave 的 blog post)