From: | Holger Dörl <holger(dot)doerl(at)web(dot)de> |
---|---|
To: | pgsql-bugs(at)postgresql(dot)org |
Subject: | regular expression and index on 7.2 |
Date: | 2002-04-25 22:21:02 |
Message-ID: | 200204252221.g3PML1v11983@mailgate5.cinetic.de |
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Lists: | pgsql-bugs |
Hi,
I tried the following on 7.1.3-38 and pgsl used the index:
EXPLAIN
mp3base=# explain
mp3base-# select * from mp3_
mp3base-# where name ~ '^cre';
NOTICE: QUERY PLAN:
Index Scan using mp3_name on mp3_ (cost=0.00..8.14 rows=10 width=28)
On an other machine I've a psql 7.2-1 and I got this result:
mp3base=# explain
mp3base-# select * from mp3_
mp3base-# where name ~ '^cre';
NOTICE: QUERY PLAN:
Seq Scan on mp3_ (cost=0.00..2150.93 rows=363 width=794)
On both machines is this index:
CREATE INDEX "mp3_name" ON mp3_(name);
Do you have any idea why it dosn't work with 7.2 ????
And what can I do to use the index ????
(7.2 runs on a mandrake and 7.1.3 on suse
both databases are created as: createdb -E LATIN1 mp3base
Thx Holger
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