如果您需要刪除SQL數據庫所有表的所有字段中含有的某一指定數據， 應該如何做呢？下面就將為您介紹如何使用SQL語句解決這個問題（指定刪除的數據為XX），供您參考。

1  an   12345    aXX
2  XXb  56789    cXX
.  ...  ...      ...
.. ...  ....      ....
執行后
1  an   12345    a
2  B    56789    c
.  ...  ...      ...
.. ...  ....      ....
聲明下 所有表 所有字段 中包含XX 的 

——————————————————————————————

程序代碼：

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