Re: bad performances using hashjoin

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От Mischa
Тема Re: bad performances using hashjoin
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Msg-id 1109005894.421a16469b1c5@webmail.telus.net
обсуждение исходный текст
Ответ на Re: bad performances using hashjoin  (Tom Lane <tgl@sss.pgh.pa.us>)
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Quoting Tom Lane <tgl@sss.pgh.pa.us>:

> Klint Gore <kg@kgb.une.edu.au> writes:
> > Is having an order by in a view legal?
>
> Not according to the SQL spec, but PG has allowed it for several releases.
> (The same goes for ORDER BY in a sub-select, which is actually pretty
> much the same thing ...)

Umm... if you implement LIMIT in a subselect, it becomes highly meaningful (nad
useful.

Is this a case of one nonstandard feature being the thin edge of the wedge
for another?
--
"Dreams come true, not free."


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