From: | Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us> |
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To: | vadim(at)krs(dot)ru (Vadim Mikheev) |
Cc: | hackers(at)postgreSQL(dot)org |
Subject: | Re: [HACKERS] Bushy Plans fixed |
Date: | 1999-02-18 03:36:25 |
Message-ID: | 199902180336.WAA14073@candle.pha.pa.us |
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Lists: | 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(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup. | Drexel Hill, Pennsylvania 19026
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