Re: Deleting vs foreign keys

From: WireSpot <wirespot(at)gmail(dot)com>
To: pgsql-general(at)postgresql(dot)org
Subject: Re: Deleting vs foreign keys
Date: 2005-10-25 09:45:18
Message-ID: b2d4b0380510250245u491f71d7m925eeb00cf7c3e29@mail.gmail.com
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On 10/25/05, Martijn van Oosterhout <kleptog(at)svana(dot)org> wrote:
> BTW, have you considered TRUNCATE? (although it may not work with
> foreign keys).

It doesn't :)

"TRUNCATE cannot be used if there are foreign-key references to the
table from other tables. Checking validity in such cases would require
table scans, and the whole point is not to do one."

Besides, emptying entire tables never happens, there's just selective
deletes from the "master" table.

Thanks for the tip, guys. I'll go punch in some indexes and I'll be
back to report how much of a difference it made.

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