sql function递归

alter function Fn_GetUserGroupRelation

(

@DHsItemID int

)

returns nvarchar(1024)

begin

declare @Col_HsItemID int

declare @Result nvarchar(1024)

set @Result=''

select @Col_HsItemID = Col_HsItemID from Hs_Relation where Col_DHsItemID=@DHsItemID

if @Col_HsItemID <> 1

begin

set @Result = dbo.Fn_GetUserGroupRelation(@Col_HsItemID) + '#' + convert(nvarchar(1024),@Col_HsItemID)

end

return @Result

end

---select dbo.Fn_GetUserGroupRelation(7)