Re: query plan in pg7.4 vs 8.0.3
От | Albert Vernon Smith |
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Тема | Re: query plan in pg7.4 vs 8.0.3 |
Дата | |
Msg-id | 0648A975-5EB0-47DE-8D40-FBD1C8BEB9F8@absentia.com обсуждение исходный текст |
Ответ на | Re: query plan in pg7.4 vs 8.0.3 (Tom Lane <tgl@sss.pgh.pa.us>) |
Ответы |
Re: query plan in pg7.4 vs 8.0.3
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Список | pgsql-general |
I just re-checked, and all the same index definitions are on both tables. Cheers, -albert On 17.6.2005, at 14:20, Tom Lane wrote: > Albert Vernon Smith <contact1@absentia.com> writes: > >> I am in process of migrating a database from Pg 7.4.3 to Pg 8.0.3. I >> dumped and reloaded the data, and things look good, until I try to >> work with it. When I try to make a query to a view based on a large >> join (select * from 'view' limit 10), the 7.4.3 query works very >> well, and the indexes are being used well. But, when I go to 8.0.3, >> there are some very costly joins, and the query is not workable. >> > > Are you sure you have all the same indexes in the 8.0 database? It > looks like one might be missing on assay2rs.assay_id. > > regards, tom lane >
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