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Thread: Is this still true?

Is this still true?

From
Joseph Shraibman
Date:
http://www.postgresql.org/docs/faq-english.html#4.23  Is this a leftover
from previous versions of postgres or is this still true for 7.0?

Re: Is this still true?

From
Bruce Momjian
Date:
> http://www.postgresql.org/docs/faq-english.html#4.23  Is this a leftover
> from previous versions of postgres or is this still true for 7.0?
>

Still true in 7.0.

--
  Bruce Momjian                        |  http://www.op.net/~candle
  pgman@candle.pha.pa.us               |  (610) 853-3000
  +  If your life is a hard drive,     |  830 Blythe Avenue
  +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026

Re: Is this still true?

From
Mike Mascari
Date:
Bruce Momjian wrote:
>
> > http://www.postgresql.org/docs/faq-english.html#4.23  Is this a leftover
> > from previous versions of postgres or is this still true for 7.0?
> >
>
> Still true in 7.0.

Gee. Shouldn't 4.24 use the advice above in 4.23?

I.E., shouldn't it read:

SELECT tab1.col1, tab2.col2
FROM tab1, tab2
WHERE tab1.col1 = tab2.col1
UNION ALL
SELECT tab1.col1, NULL
FROM tab1
WHERE tab1.col1 NOT EXISTS
 (SELECT tab2.col1 FROM tab2 WHERE tab1.col1 = tab2.col1)
ORDER BY tab1.col1

Mike Mascari

Re: Is this still true?

From
Bruce Momjian
Date:
> Bruce Momjian wrote:
> >
> > > http://www.postgresql.org/docs/faq-english.html#4.23  Is this a leftover
> > > from previous versions of postgres or is this still true for 7.0?
> > >
> >
> > Still true in 7.0.
>
> Gee. Shouldn't 4.24 use the advice above in 4.23?
>
> I.E., shouldn't it read:
>
> SELECT tab1.col1, tab2.col2
> FROM tab1, tab2
> WHERE tab1.col1 = tab2.col1
> UNION ALL
> SELECT tab1.col1, NULL
> FROM tab1
> WHERE tab1.col1 NOT EXISTS
>  (SELECT tab2.col1 FROM tab2 WHERE tab1.col1 = tab2.col1)
> ORDER BY tab1.col1

Yes, but it seems too confusing to mix them.  We really need both those
features added to PostgreSQL.

--
  Bruce Momjian                        |  http://www.op.net/~candle
  pgman@candle.pha.pa.us               |  (610) 853-3000
  +  If your life is a hard drive,     |  830 Blythe Avenue
  +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026