Re: [HACKERS] Problem with complex query

From: Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us>
To: phd2(at)earthling(dot)net
Cc: PostgreSQL-development <pgsql-hackers(at)postgreSQL(dot)org>
Subject: Re: [HACKERS] Problem with complex query
Date: 1999-05-09 14:57:16
Message-ID: 199905091457.KAA22239@candle.pha.pa.us
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> Hello!
>
> Query:
>
> SELECT DISTINCT p.subsec_id
> FROM central cn, shops sh, districts d, positions p
> WHERE cn.shop_id = sh.shop_id AND sh.distr_id = d.distr_id
> AND d.city_id = %d AND cn.pos_id = p.pos_id
> AND cn.date_i >= current_date - '7 days'::timespan
>
> While running postgres slowly eats all swap space (30 Meg) and aborts:
>
> pqReadData() -- backend closed the channel unexpectedly.
> This probably means the backend terminated abnormally before or
> while processing the request.
>
> Is it I just have not enough memory or bug?

Not sure how to comment on this. Is 6.5beta any better?

--
Bruce Momjian | http://www.op.net/~candle
maillist(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
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