Re: [SQL] More efficient DELETE ... ?
От | Bruce Momjian |
---|---|
Тема | Re: [SQL] More efficient DELETE ... ? |
Дата | |
Msg-id | 200001221756.MAA22581@candle.pha.pa.us обсуждение исходный текст |
Ответ на | More efficient DELETE ... ? (The Hermit Hacker <scrappy@hub.org>) |
Список | pgsql-sql |
> > This looks painful ... > > DELETE FROM webhit_referer_raw > WHERE oid IN ( SELECT w.oid > FROM webhit_referer_raw w, referrer_data r > WHERE stat_date < 'Jan 17 2000 15:05:00' > AND w.referrer_url = r.referrer ); > > But, reading through the man page, it looks like this about the only way > of doing it? Or am I missing something as obvious as the UPDATE I asked > about the other day? :( Read chapter 8 from my book. That is the only way for DELETE. You could to EXISTS and that may be faster. -- Bruce Momjian | http://www.op.net/~candle pgman@candle.pha.pa.us | (610) 853-3000+ If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania19026
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