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index refuses to build

From: "Jean-Yves F(dot) Barbier" <12ukwn(at)gmail(dot)com>
To: pgsql-novice(at)postgresql(dot)org
Subject: index refuses to build
Date: 2011-12-29 23:10:01
Message-ID: 20111230001001.5192e441@anubis.defcon1 (view raw, whole thread or download thread mbox)
Lists: pgsql-hackerspgsql-novice
Hi list,

I'm wrong somewhere, but where?:

CREATE INDEX tst1m_name_lu_ix ON tst1m(lower(unaccent(name)));
ERROR:  functions in index expression must be marked IMMUTABLE

Decomposing it reveals that it is the 'unaccent' part that

CREATE INDEX tst1m_name_lu_ix ON tst1m(unaccent(name));
ERROR:  functions in index expression must be marked IMMUTABLE

From what I found on the web I also tried to cast it to text,
but the error's still here:(

One of the signs of Napoleon's greatness is the fact that he once
had a publisher shot.
		-- Siegfried Unseld


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