From: Andrew Dunstan <andrew@dunslane.net>
To: bhuvan Mitra <bhuvanrjb@gmail.com>
To: pgsql-performance@postgresql.org
Subject: Re: problem with select *
Date: Mon, 24 Aug 2015 07:44:17 -0400
Message-ID: <55DB0391.7090004@dunslane.net> (raw)
In-Reply-To: <CAMmryP6hje58W78UnaC0-gyi1VqnmFAPfhAN_kE_d_VipbBq1w@mail.gmail.com>
References: <CAMmryP6hje58W78UnaC0-gyi1VqnmFAPfhAN_kE_d_VipbBq1w@mail.gmail.com>
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On 08/24/2015 03:04 AM, bhuvan Mitra wrote:
> Hello,
>
> I have a table with 12 columns and 20 Million rows. While writing the
> table I do not find any problem but when reading that I have some
> issues faced. When I perform a 'select * from table limit 14000000;'
> (selecting 14million rows), it is working fine. If the limit value is
> 15000000, it is throwing the error as 'out of memory'.
>
> If the query is 'select * from table' , The process is getting killed
> by displaying the message 'killed'.
>
> Kindly tell me where it is going wrong. I have 6MB cache, 1.6GHz CPU,
> linux 14.04 OS, 8GB RAM.
>
>
You should be using a cursor.
cheers
andrew
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To: pgsql-performance@postgresql.org
Cc: andrew@dunslane.net, bhuvanrjb@gmail.com
Subject: Re: problem with select *
In-Reply-To: <55DB0391.7090004@dunslane.net>
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