如果你必須使用sp_msforeachtable你可以有條件地運行你的代碼根據你的列的存在。
即
exec sp_msforeachtable '
IF EXISTS (SELECT * FROM INFORMATION_SCHEMA.COLUMS WHERE COLUMN_NAME =''Col1'' AND TABLE_NAME = ''?'')
BEGIN
UPDATE ? SET Col1=
case when Col1 = "ppp" then "qqq"
when Col1 = "aaa" then "xxx"
end
END
'
或者,更好:
DECLARE @myScripts TABLE(
id INT IDENTITY(1,1) PRIMARY KEY CLUSTERED,
sql VARCHAR(max)
)
DECLARE @max INT,
@i INT,
@SQL VARCHAR(MAX)
INSERT INTO @myscripts(sql)
SELECT 'UPDATE [' + tablename + '] SET Col1=
case when Col1 = "ppp" then "qqq"
when Col1 = "aaa" then "xxx"
end'
FROM [INFORMATION_SCHEMA].TABLES WHERE TABLE_NAME IN ('table1','table2','table3','table4')
SELECT @max = @@ROWCOUNT, @i = 1
WHILE @i <= @max
BEGIN
SELECT @SQL = Script
FROM @myScripts
WHERE ID = @i
EXEC sp_executesql @statement = @SQL
SET @i = @i + 1
END
寫一個WHILE循環而不是使用sp_msforeachtable .... –
爲什麼?做一些有用的東西,而不是試圖強迫某些東西。我不知道你對實時應用程序的參考是什麼? –