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Doc: fix example of recursive query.

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

Simon Riggs

Discussion: https://postgr.es/m/166161184718.1235920.6304070286124217754@wrigleys.postgresql.org
This commit is contained in:
Tom Lane 2022-08-28 10:44:52 -04:00
parent 805a397db4
commit 8c7fc86ca9
1 changed files with 1 additions and 1 deletions
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doc/src/sgml/queries.sgml
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@ -2195,7 +2195,7 @@ SELECT sum(n) FROM t;
WITH RECURSIVE included_parts(sub_part, part, quantity) AS ( WITH RECURSIVE included_parts(sub_part, part, quantity) AS (
SELECT sub_part, part, quantity FROM parts WHERE part = 'our_product' SELECT sub_part, part, quantity FROM parts WHERE part = 'our_product'
UNION ALL 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 FROM included_parts pr, parts p
WHERE p.part = pr.sub_part WHERE p.part = pr.sub_part
) )