From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Sun, 28 Aug 2022 14:44:52 +0000 (-0400)
Subject: Doc: fix example of recursive query.
X-Git-Tag: REL_13_9~78
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=4079d91e1ce5439873c3a3a9bd790081ec1bd642;p=thirdparty%2Fpostgresql.git

Doc: fix example of recursive query.

Compute total number of sub-parts correctly, per jason@banfelder.net

Simon Riggs

Discussion: https://postgr.es/m/166161184718.1235920.6304070286124217754@wrigleys.postgresql.org
---

diff --git a/doc/src/sgml/queries.sgml b/doc/src/sgml/queries.sgml
index 82de95a966b..18a9e79259f 100644
--- a/doc/src/sgml/queries.sgml
+++ b/doc/src/sgml/queries.sgml
@@ -2133,7 +2133,7 @@ SELECT sum(n) FROM t;
 WITH RECURSIVE included_parts(sub_part, part, quantity) AS (
     SELECT sub_part, part, quantity FROM parts WHERE part = 'our_product'
   UNION ALL
-    SELECT p.sub_part, p.part, p.quantity
+    SELECT p.sub_part, p.part, p.quantity * pr.quantity
     FROM included_parts pr, parts p
     WHERE p.part = pr.sub_part
 )