Re: Hey! ORDER BY in VIEWS?

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От Josh Berkus
Тема Re: Hey! ORDER BY in VIEWS?
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Msg-id web-85953@davinci.ethosmedia.com
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Ответ на Re: Hey! ORDER BY in VIEWS?  (Peter Eisentraut <peter_e@gmx.net>)
Ответы RE: Hey! ORDER BY in VIEWS?  ("Robby Slaughter" <webmaster@robbyslaughter.com>)
Список pgsql-sql
Pater, Robbie, Bruce,

> > Hey!  I thought you couldn't do ORDER BY in views ... yet I just
> did.
> > Is this a new thing, or am I just getting my Trasact-SQL and my
> > PostgreSQL mixed up again?
> 
> I think it was allowed from 7.1 on to enable LIMIT in views to work
> sensibly.

Makes sense.  I take it that this is a deviation from the ANSI 92
standard, then?

What happens if I put an ORDER BY in a view, then call an ORDER BY in a
query, e.g.:

CREATE VIEW test_view AS
SELECT client_name, city, zip FROM clients
WHERE zip IS NOT NULL
ORDER BY zip;

SELECT * FROM test_view ORDER BY city;

Does the second ORDER BY override or suppliment the view ORDER BY, or is
it ignored?

-Josh




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