在我们的工作中经常遇到这样一个问题,在页面中保存一条数据,有个字段值为“张三”,但是,不知道这条数据保存在了哪个表中,现在我们想要追踪该值是存储到了那个表的那个字段中,具体要怎么操作呢?下面我们可以借助存储过程来解决这一问题
首先,创建一个存储过程,具体代码如下
create PROCEDURE [dbo].[P_SYSTEM_FindData]
(
@value VARCHAR(1024)
)
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
DECLARE @sql VARCHAR(1024)
DECLARE @table VARCHAR(64)
DECLARE @column VARCHAR(64)
CREATE TABLE #t (
tablename VARCHAR(64),
columnname VARCHAR(64)
)
DECLARE TABLES CURSOR
FOR
SELECT o.name, c.name
FROM syscolumns c
INNER JOIN sysobjects o ON c.id = o.id
WHERE o.type = 'U' AND c.xtype IN (167, 175, 231, 239)
ORDER BY o.name, c.name
OPEN TABLES
FETCH NEXT FROM TABLES
INTO @table, @column
WHILE @@FETCH_STATUS = 0
BEGIN
SET @sql = 'IF EXISTS(SELECT NULL FROM [' + @table + '] '
SET @sql = @sql + 'WHERE RTRIM(LTRIM([' + @column + '])) LIKE ''%' + @value + '%'') '
SET @sql = @sql + 'INSERT INTO #t VALUES (''' + @table + ''', '''
SET @sql = @sql + @column + ''')'
EXEC(@sql)
FETCH NEXT FROM TABLES
INTO @table, @column
END
CLOSE TABLES
DEALLOCATE TABLES
SELECT *
FROM #t
DROP TABLE #t
End
创建好存储过程后,开始查询了,我们选中存储过程,写入参数,点击执行即可
查询代码如下(或者右键执行存储过程也行):
DECLARE @return_value int
EXEC @return_value = [dbo].[P_SYSTEM_FindData]
@value = N'张三'
SELECT 'Return Value' = @return_value
GO
执行完后,即可找到该值所在的表和字段
tablename:表名
columnname:字段名
原表数据如下:
表名:[Staff]
数据: