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Re: What's faster?

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "D'Arcy J(dot)M(dot) Cain" <darcy(at)druid(dot)net>
Cc: "Keith Bottner" <kbottner(at)comcast(dot)net>,pgsql-performance(at)postgresql(dot)org
Subject: Re: What's faster?
Date: 2003-12-27 18:30:38
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-performance
"D'Arcy J.M. Cain" <darcy(at)druid(dot)net> writes:
> We went through this recently.  One thing we found that may apply to you is 
> how many fields in the client record have a foreign key constraint.  We find 
> that tables with lots of FKeys are a lot more intensive on updates.

BTW, this should have gotten better in 7.3.4 and later --- there is
logic to skip checking an FKey reference if the referencing columns
didn't change during the update.

			regards, tom lane

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