SQL数据库查询某个字段值的所有数据

--声明必要变量
DECLARE @tablename NVARCHAR(80),@columnname NVARCHAR(20),@sql NVARCHAR(2000),@sql2 NVARCHAR(2000),@sql3 NVARCHAR(2000),@CName NVARCHAR(20)
SET @CName='AccountId'
--游标
DECLARE cur CURSOR FOR
--1、查找包含某列的table
SELECT '['+TABLE_SCHEMA+'].['+TABLE_NAME+']' AS TableName,'['+COLUMN_NAME+']'
FROM [INFORMATION_SCHEMA].[COLUMNS]
WHERE [COLUMN_NAME] = @CName 
--2、查找包含某关键字的table
--SELECT TABLE_NAME,TABLE_TYPE
--FROM [INFORMATION_SCHEMA].[TABLES]
--WHERE TABLE_NAME LIKE'% %'

OPEN cur
FETCH NEXT FROM cur INTO @tablename,@columnname
while (@@fetch_status=0)
BEGIN
SET @sql='select top 100 '''+@tablename+''' as TName,* from '+ @tablename +' where '+字段名=具体值

PRINT @sql
--EXECUTE (@sql)

FETCH NEXT FROM cur INTO @tablename,@columnname
END
close cur 
deallocate cur
GO