SQL server根据数据、值、字段值反查表名、字段名

在整个数据库中根据某一个字段值查找该值所在的表及列
方案一：

1.建存储过程[SP_FindValueInDB]

Create PROCEDURE [dbo].[SP_FindValueInDB]

(

@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

2.查询语句

EXEC SP_FindValueInDB N'字段值'

方案二：

只知道页面数据，而且数据库表没有备注，需要查询这个数据对应哪些表的哪些字段，操作如下：选中需要查询的数据库，执行如下sql：
DECLARE @what varchar(800)
SET @what='要查询的值' --要搜索的字符串

DECLARE @sql varchar(8000)

DECLARE TableCursor CURSOR LOCAL FOR
SELECT sql='IF EXISTS ( SELECT 1 FROM ['+o.name+'] WHERE ['+c.name+'] LIKE ''%'+@what+'%'' ) PRINT ''Table and field：['+o.name+'].['+c.name+']'''
FROM syscolumns c JOIN sysobjects o ON c.id=o.id

-- 175=char 56=int; 可以执行查询： select * from sys.types 获取每个数据类型对应的值
WHERE o.xtype='U' AND c.status>=0 AND c.xusertype IN (175, 239, 231, 167 )

OPEN TableCursor

FETCH NEXT FROM TableCursor INTO @sql
WHILE @@FETCH_STATUS=0
BEGIN
EXEC( @sql )
FETCH NEXT FROM TableCursor INTO @sql
END

CLOSE TableCursor

-- 删除游标引用
DEALLOCATE TableCursor

执行如上语句后控制台就会输出这条数据在哪些表里，是哪些字段，运行结果如下图所示：

缩小了表的查询范围 ，不必盲目查询表。