sql删除表中某一指定数据的方法

sql删除表中某一指定数据的方法

如果您需要删除SQL数据库所有表的所有字段中含有的某一指定数据，应该如何做呢？下面就将为您介绍如何使用SQL语句解决这个问题（指定删除的数据为XX），供您参考。

1 an 12345 aXX

2 XXb 56789 cXX

. ... ... ...

.. ... .... ....

执行后

1 an 12345 a

2 B 56789 c

. ... ... ...

.. ... .... ....

声明下所有表所有字段中包含XX 的——————————————————————————————

程序代码：

DECLARE @tabName VARCHAR(40),@colName

VARCHAR(40)

DECLARE @sql VARCHAR(2000)

DECLARE tabCursor CURSOR FOR

Select name From sysobjects Where xtype = 'u' AND name <> 'dtproperties'

OPEN tabCursor

FETCH NEXT FROM tabCursor INTO @tabName

WHILE @@fetch_status = 0

BEGIN

SET @sql = 'Update ' + @tabName + ' SET '

DECLARE colCursor CURSOR FOR Select Name FROM SysColumns Where id=Object_Id(@tabName)

OPEN colCursor

FETCH NEXT FROM colCursor INTO @colName

WHILE @@fetch_status = 0

BEGIN

SET @sql = @sql + @colName + '=REPLACE('

+@colName+ ',''XX'',''''),'

FETCH NEXT FROM colCursor INTO @colName

END

SET @sql = LEFT(@sql,LEN(@sql)-1)

EXEC(@sql)

CLOSE colCursor

DEALLOCATE colCursor

FETCH NEXT FROM tabCursor INTO @tabName END

CLOSE tabCursor

DEALLOCATE tabCursor