Re: [HACKERS] Bushy Plans fixed
От | Bruce Momjian |
---|---|
Тема | Re: [HACKERS] Bushy Plans fixed |
Дата | |
Msg-id | 199902180336.WAA14073@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Re: [HACKERS] Bushy Plans fixed (Vadim Mikheev <vadim@krs.ru>) |
Список | pgsql-hackers |
> > Frankly, I would like to enable bushy plans and right-handed plans by > > default. The optimizer is now fast enough that a 9-table join is almost > > instantaneous, even with bush plans. People are not sophisticated > > enough to know when to enables these options themselves. I am not sure I > > am either. I would like to enables both, fix whatever breaks, and > > programmatically enable the options when they make sense. > > We need not in right-sided plans code any more. > I agreed that we should enable bushes by default. Are you saying right-hand plans are not useful if we have bushy plans? If so, I will remove the right-hand code. -- Bruce Momjian | http://www.op.net/~candle maillist@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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