Re: [SQL] "SELECT IN" Still Broken in 7.4b
От
Joe Conway
Тема
Re: [SQL] "SELECT IN" Still Broken in 7.4b
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Msg-id
3F45414A.6030301@joeconway.com
Ответ на
Re: [SQL] "SELECT IN" Still Broken in 7.4b (Tom Lane)
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Re: [SQL] "SELECT IN" Still Broken in 7.4b "Christopher Kings-Lynne" <chriskl@familyhealth.com.au>
Tom Lane wrote: > I'm toying with the notion of ripping out that logic and instead > building an in-memory hashtable of already-returned TIDs. This could > theoretically run out of memory if the multiple indexscan returns enough > tuples, but I think in practice that wouldn't happen because the planner > wouldn't choose an indexscan when very large numbers of tuples are being > selected. I thought with your recent changes, you could use dynahash, which already spills to disk instead of consuming all memory? Joe
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