From: Tom Lane <tgl@sss.pgh.pa.us>
To: Manfred Koizar <mkoi-pg@aon.at>
Cc: Christoph Haller <ch@rodos.fzk.de>
Cc: pgsql-sql@postgresql.org
Subject: Re: Efficient DELETE Strategies
Date: Wed, 12 Jun 2002 10:49:26 -0400
Message-ID: <9663.1023893366@sss.pgh.pa.us> (raw)
In-Reply-To: <es9eguk7ov9644qo4qd341ess8ip8o51ok@4ax.com>
References: <200206110918.LAA20463@rodos>
<18946.1023805720@sss.pgh.pa.us>
<es9eguk7ov9644qo4qd341ess8ip8o51ok@4ax.com>
Manfred Koizar <mkoi-pg@aon.at> writes:
> Oracle basically supports (with slight variations between releases
> 7/8/9):
> DELETE [FROM] { table
> | view
> | ( subquery )
> }
> [alias] [WHERE ...] [returning_clause]
Bizarre. How are you supposed to delete from a subquery?
> According to the "SQL Quick Syntax Guide" the WHERE clause is not
> optional. Does anybody know, if this is a documentation bug?
Probably. SQL92 saith:
<delete statement: searched> ::=
DELETE FROM <table name>
[ WHERE <search condition> ]
<delete statement: positioned> ::=
DELETE FROM <table name>
WHERE CURRENT OF <cursor name>
so I could see where a sloppy reader might get confused...
regards, tom lane
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To: pgsql-sql@postgresql.org
Cc: tgl@sss.pgh.pa.us, mkoi-pg@aon.at, ch@rodos.fzk.de
Subject: Re: Efficient DELETE Strategies
In-Reply-To: <9663.1023893366@sss.pgh.pa.us>
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