This seems to work..
UPDATE x set i=i+1
from (select i as m from x order by m desc) y where x.i = y.m
Jayadevan
From: neuhauser+pgsql-general#postgresql.org@xxxxxxxxxx
To: pgsql-general@xxxxxxxxxxxxxx
Date: 12/31/2009 09:15 PM
Subject: set-level update fails with unique constraint violation
Sent by: pgsql-general-owner@xxxxxxxxxxxxxx
Hello,
this fails with "duplicate key value":
CREATE TABLE x (
i INT NOT NULL UNIQUE
);
INSERT INTO x (i) VALUES (1), (2), (3);
UPDATE x SET i = i + 1;
are there any plans to make this work?
--
Roman Neuhauser
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