sqlserver查詢指定樹形結構的全部子節點

用標準sql的with實現遞歸查詢

with subqry(id,name,pid) as (
　　select id,name,pid from test1 where id = 5 --指定id
　　union all
　　select test1.id,test1.name,test1.pid from test1,subqry　where test1.pid = subqry.id
)
select* from subqry;