Horton

Re: directory tree query with big planner variation

Axel Rau <axel.rau@chaos1.de>

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From: Axel Rau <Axel.Rau@Chaos1.DE>
To: Michael Stone <mstone+postgres@mathom.us>
Cc: pgsql-performance@postgresql.org
Date: 2006-07-31T16:19:06Z
Lists: pgsql-performance 
Am 31.07.2006 um 17:54 schrieb Axel Rau:
>
> Tweaking your query and omitting the RTRIM/REPLACE stuff, I get:
My example did not cover the case of empty subdirectories, in which  
case your simplified query fails:
-------------------------------
              path             | children
------------------------------+----------
.DS_Store                    | f
/Users/axel/Projects/ADMIN/  | t
/Users/axel/Projects/DB/     | t
/Users/axel/Projects/HW/     | t
/Users/axel/Projects/JETSEC/ | t
/Users/axel/Projects/MISC/   | t
/Users/axel/Projects/NET/    | t
/Users/axel/Projects/SW/     | t
/Users/axel/Projects/TOOLS/  | t
(9 rows)
-------------------------------
Where it shoould be:
-------------------------------
    name    | children
-----------+----------
.DS_Store | f
ADMIN     | t
DB        | t
HW        | f
JETSEC    | f
MISC      | f
NET       | t
SW        | t
TOOLS     | t
(9 rows)
-------------------------------
Axel
Axel Rau, ☀Frankfurt , Germany                       +49-69-951418-0