每个地区递归层级可能不一致,数据表(table)存放最小层级地区 area --地区层级表 id name f_id leve 1 中国 0 1 2 湖北 1 2 3 武汉 2 3 ... --测试数据 with area(id,"name",f_id,leve) as ( ,, union all ,, union all ,, union all ,, union all ,, union all ,, union all ,, union all ,, union all ,,
SQL Server 没有类似于Oracle START WITH NAME='xx' CONNECT BY PRIOR ID=PARENT_ID这样的语句,但是可以通过自定义标准函数+With语句实现,速度也是杠杠的 ALTER FUNCTION [dbo].[RecursionSysLocation] ( -- Add the parameters for the function here ) ) RETURNS TABLE AS RETURN ( with temp ( [Id], [p
with cte as ( select belongsAgent from [QPProxyDB].[dbo].[BS_ProxyInfo] where ProxyID = @ProxyID union all select a.ProxyID from [QPProxyDB].[dbo].[BS_ProxyInfo] a join cte b on a.ProxyID = b.belongsAgent ) select * from cte order by belongsAgent asc
一.查询当前部门下的所有子部门 WITH dept AS ( SELECT * FROM dbo.deptTab --部门表 WHERE pid = @id UNION ALL SELECT d.* FROM dbo.deptTab d INNER JOIN dept ON d.pid = dept.id ) SELECT * FROM dept 二.查询当前部门所有上级部门 WITH tab AS ( SELECT DepId , ParentId , DepName , [Enable] ,
--在SQL Server 中其实提供了CTE[公共表表达式]来实现递归: Declare @Id Int Set @Id = 24; ---在此修改父节点 With RootNodeCTE(Id,ParentId) As ( Select Id,ParentId From Dept Where ParentId In (@Id) Union All Select Dept.Id,Dept.ParentId From RootNodeCTE Inner Join Dept On RootN
SQL SERVER似乎天然具有支持递归的属性. 1.比如说,有几次,我编写或修改存储过程的时候,为图方便,在末尾随手写上 执行这个存储过程 的语句,比如 [sql] view plaincopy ALTER PROCEDURE prd_GetData @Top INT = 10; AS SELECT * FROM [dbo].Table1 ORDER BY ID DESC; END EXEC [dbo].prd_GetData 本来应该用鼠标选定最后一行,指定它来执行,但一时手颤,没有选上就