sql server - delete all the child rows in sql table by parentid -


i have table create tree multiple levels , parents. table structure looks this.

enter image description here

when delete "titleid", want children , grandchildren deleted. easiest way such in sql. if simple delete "where parentid=titleid", children level 1 depth deleted.

declare @titleid int   select @@titleid = 2   ;with results as(          select  titleid            mytable            titleid = @titleid          union          select  t.titleid             mytable t                  inner join ret r on t.parentid = r.titleid )   delete mytable titleid in (select titleid    results )

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