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Re: Bug #514: Backend crashes periodically

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Hiroshi Inoue <Inoue(at)tpf(dot)co(dot)jp>
Cc: Warren Volz <wrv(at)po(dot)cwru(dot)edu>, pgsql-bugs(at)postgresql(dot)org
Subject: Re: Bug #514: Backend crashes periodically
Date: 2001-11-13 00:26:01
Message-ID: 29438.1005611161@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-bugs
Hiroshi Inoue <Inoue(at)tpf(dot)co(dot)jp> writes:
> BTW I have a question about this example.
> Session 2 deletes no row because *session 1* already
> deleted the rows but the session_del rule seems to
> be invoked. Is it a right behavior ?

Certainly the rule should be invoked --- whether it finds any rows
cannot be determined until it's invoked, anyhow.  Remember a rule
is not a trigger, it is a transform applied to the query before
we begin execution.

			regards, tom lane

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