Re: counting tupples
От | |
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Тема | Re: counting tupples |
Дата | |
Msg-id | 1292.203.145.130.142.1035818497.squirrel@mail.trade-india.com обсуждение исходный текст |
Ответ на | counting tupples (David Bear <iddwb@moroni.pp.asu.edu>) |
Список | pgsql-admin |
Hi folks, There is "reltuples" in pg_class which is approximately equal to select count(*) from relation. i think its updated only on VACUUMING ? (david its not answer to ur question sorry) regds mallah. > I couldn't find anything relating to getting the cardinality of a table. I know a select will > display number of rows. I was hoping there was a 'cheaper' (less expensive) way than doing a > full select. > -- > David Bear > College of Public Programs/ASU > > ---------------------------(end of broadcast)--------------------------- TIP 1: subscribe and > unsubscribe commands go to majordomo@postgresql.org ----------------------------------------- Get your free web based email at trade-india.com. "India's Leading B2B eMarketplace.!" http://www.trade-india.com/
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