Re: Can't put sub-queries values in queries results?

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От Stephan Szabo
Тема Re: Can't put sub-queries values in queries results?
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Msg-id Pine.BSF.4.10.10007221044360.88983-100000@megazone23.bigpanda.com
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Ответ на Can't put sub-queries values in queries results?  ("Manuel Lemos" <mlemos@acm.org>)
Ответы Re: Can't put sub-queries values in queries results?  ("Manuel Lemos" <mlemos@acm.org>)
Список pgsql-general
What version are you using?
Current sources allow this, and 7.0.2 should as well.

sszabo=# select * from a;
 a
---
 3
 4


(4 rows)

sszabo=# select * from b;
 a
---
 3
 4
 3
 3
(4 rows)

sszabo=# select distinct a, (select count(*) from b where b.a=a.a) from a;
 a | ?column?
---+----------
 3 |        3
 4 |        1
   |        0
(3 rows)

Stephan Szabo
sszabo@bigpanda.com

On 21 Jul 2000, Manuel Lemos wrote:
> SELECT f1, (SELECT COUNT(*) FROM t2 WHERE t2.f2=t1.f1) AS my_count FROM t1


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