Re: Query not using index
От | ryan@paymentalliance.net |
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Тема | Re: Query not using index |
Дата | |
Msg-id | 3afa95d5.275759200@news.postgresql.org обсуждение исходный текст |
Ответ на | Re: Query not using index (Stephan Szabo <sszabo@megazone23.bigpanda.com>) |
Ответы |
Re: Re: Query not using index
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Список | pgsql-general |
I vacuum every half hour! Here is the output from EXPLAIN: NOTICE: QUERY PLAN: Seq Scan on pa_shopping_cart (cost=0.00..7237.94 rows=9420 width=296) EXPLAIN Thanks! On Thu, 10 May 2001 18:19:16 +0000 (UTC), sszabo@megazone23.bigpanda.com (Stephan Szabo) wrote: > >Have you vacuum analyzed recently and what does >explain show for the query? > >On Thu, 10 May 2001 ryan@paymentalliance.net wrote: > >> Here's the query: >> >> SELECT >> cart_row_id >> FROM >> pa_shopping_cart >> WHERE >> order_id = 20; >> [ ... ] >> There is an index on: >> just order_id >> just order_id and cart_row_id >> and a PK on cart row_id >> >> I don't understand why it's not using one of these indexes! >> Please post your responses to the group - my email is down. > > >---------------------------(end of broadcast)--------------------------- >TIP 2: you can get off all lists at once with the unregister command > (send "unregister YourEmailAddressHere" to majordomo@postgresql.org)
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