Re: Index Scanning
От
Richard Huxton
Тема
Re: Index Scanning
Дата
Msg-id
459B8B87.2020802@archonet.com
Ответ на
Index Scanning (Enrico)
Список
Дерево обсуждения
Index Scanning Enrico <scotty@linuxtime.it>
Re: Index Scanning Richard Huxton <dev@archonet.com>
Enrico wrote: > Hi, I have this query > > select TB.id_int,TR.codice_art,importo,cod_iva,prezzo,qta as qta > from bolle_carico_testata TB inner join tmp_righe_bolle_carico TR on (TB.id_bolla_rem=TR.id_bolla_rem); [snip plan] > Can anybody tell me why I have two Seq scans instead of two Ind. scan? > And how can I do to have two ind. scan? You're fetching all the rows from both tables - what would an index scan gain you? -- Richard Huxton Archonet Ltd
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