开发学院数据库 MSSQL Server Sql Server中通过父记录查找出所有关联的子记录阅读

Sql Server中通过父记录查找出所有关联的子记录

　2013-03-04 14:35:52　来源：WEB开发网　闁靛棴鎷�

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核心提示： 可查4级Sql代码select menu_id,menu_name,Father_Id from Sys_Menu where menu_id='18' or Father_Id=18 or -- 一级、二级Father_Id in (select menu_id from Sys_Menu a wh

可查4级Sql代码

select menu_id,menu_name,Father_Id from Sys_Menu where menu_id='18' or Father_Id=18 or -- 一级、二级
Father_Id in (select menu_id from Sys_Menu a where  menu_id='18' or Father_Id=18) or   -- 三级
father_id in (select menu_id from sys_menu where Father_Id in (select menu_id from Sys_Menu a where  menu_id='18' or Father_Id=18)) -- 四级