Re: problem with select * - Mailing list pgsql-performance

From Andrew Dunstan
Subject Re: problem with select *
Date
Msg-id 55DB0391.7090004@dunslane.net
Whole thread Raw
In response to problem with select *  (bhuvan Mitra <bhuvanrjb@gmail.com>)
List pgsql-performance

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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