在我們的工作中經常遇到這樣一個問題,在頁面中保存一條數據,有個字段值為“張三”,但是,不知道這條數據保存在了哪個表中,現在我們想要追蹤該值是存儲到了那個表的那個字段中,具體要怎么操作呢?下面我們可以借助存儲過程來解決這一問題
首先,創建一個存儲過程,具體代碼如下
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
創建好存儲過程后,開始查詢了,我們選中存儲過程,寫入參數,點擊執行即可
查詢代碼如下(或者右鍵執行存儲過程也行):
DECLARE @return_value int EXEC @return_value = [dbo].[P_SYSTEM_FindData] @value = N'張三' SELECT 'Return Value' = @return_value GO
執行完后,即可找到該值所在的表和字段
tablename:表名
columnname:字段名
原表數據如下:
表名:[Staff]
數據: