From: Tom Lane <tgl@sss.pgh.pa.us>
To: Josh Berkus <josh@agliodbs.com>
Cc: A.M. <agentm@cmu.edu>
Cc: pgsql-sql@postgresql.org
Subject: Re: explain (internal feature)
Date: Mon, 10 Mar 2003 23:54:29 -0500
Message-ID: <2667.1047358469@sss.pgh.pa.us> (raw)
In-Reply-To: <200303102008.56022.josh@agliodbs.com>
References: <185A05F6-5371-11D7-98AA-0030657192DA@cmu.edu>
<200303102008.56022.josh@agliodbs.com>
Josh Berkus <josh@agliodbs.com> writes:
>> db=#explain vacuum;
>> to return:
>> NOTICE: "vacuum" is an internal postgresql feature.
>> instead of:
>> ERROR: parser: parse error at or near "vacuum" at character 9
> No, it would not.
Actually, it's a fair question considering that the 7.3 man page for
EXPLAIN says you can explain "any query". But CVS-tip documentation
says that EXPLAIN can explain
Any SELECT, INSERT, UPDATE, DELETE, EXECUTE, or DECLARE CURSOR query.
which I think is sufficient description. I'm not really eager to
enlarge the parser enough to accept EXPLAIN <any SQL command> when
it's only gonna fail anyway...
regards, tom lane
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To: pgsql-sql@postgresql.org
Cc: tgl@sss.pgh.pa.us, josh@agliodbs.com, agentm@cmu.edu
Subject: Re: explain (internal feature)
In-Reply-To: <2667.1047358469@sss.pgh.pa.us>
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