Re: WITH RECURSIVE question

Marc Mamin <M(dot)Mamin(at)intershop(dot)de> wrote:

> WITH RECURSIVE struc (pref, id, depth ) AS (
> SELECT '', node, 1 from forest where node= 4
> UNION ALL
> SELECT (case when struc.pref= '' then '\' else struc.pref end )||
> '...' ,
> node,
> struc.depth +1
> FROM forest JOIN struc ON parent=struc.id
> )
> SELECT * FROM struc;
>
> (path,node,depth)
> 4 1
> \... 5 2
> \...... 6 3
>
> This is fine as long as I start with a given node (here node= 4).
>
> But How can I retrieve the complete structure in one query ?

Start with parent is null in the first query (instead of 'where
node=4').

*untested*

Andreas
--
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