Re: [HACKERS] is it possible to use LIMIT and INTERSECT ?

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Oleg Bartunov <oleg(at)sai(dot)msu(dot)su>
Cc: pgsql-hackers(at)postgreSQL(dot)org
Subject: Re: [HACKERS] is it possible to use LIMIT and INTERSECT ?
Date: 1999-10-19 05:33:09
Message-ID: 8432.940311189@sss.pgh.pa.us
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Oleg Bartunov <oleg(at)sai(dot)msu(dot)su> writes:
> Thanks Tom,
> I synced REL6_5 tree, compile, install but still query

> select a.msg_id, c.status_set_date, c.title
> from Message_Keyword_map a, messages c, keywords d
> where c.status_id =1 and d.name ~* 'sun' and a.key_id=d.key_id
> and c.msg_id=a.msg_id
> intersect
> select a.msg_id, a.status_set_date, a.title
> from messages a where a.status_id = 1 and a.title ~* 'sun' limit 10;

> produces more than 10 rows !

If you'd care to provide a reproducible stand-alone test case I'll look
into it further. I do not feel like trying to reverse-engineer your
table declarations.

regards, tom lane

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