From: | Mohammed Afsar <vmdapsar(at)gmail(dot)com> |
---|---|
To: | postgann2020 s <postgann2020(at)gmail(dot)com> |
Cc: | postgis-users(at)lists(dot)osgeo(dot)org, PostgreSQL mailing lists <pgsql-performance(at)postgresql(dot)org>, pgsql-admin <pgsql-admin(at)postgresql(dot)org> |
Subject: | Re: Suggestion to improve query performance for GIS query. |
Date: | 2020-05-22 07:16:36 |
Message-ID: | CA+6Hduu4xyp6hGMoBVR8wjxjiz41KHPKHi+fs6HbKVMN-8qrGQ@mail.gmail.com |
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Thread: | |
Lists: | pgsql-admin pgsql-performance |
Dear team,
Kindly try to execute the vacuum analyzer on that particular table and
refresh the session and execute the query.
VACUUM (VERBOSE, ANALYZE) tablename;
Regards,
Mohammed Afsar
Database engineer
On Fri, May 22, 2020, 12:30 PM postgann2020 s <postgann2020(at)gmail(dot)com>
wrote:
> Hi Team,
>
> Thanks for your support.
>
> Could you please suggest on below query.
>
> EnvironmentPostgreSQL: 9.5.15
> Postgis: 2.2.7
>
> The table contains GIS data which is fiber data(underground routes).
>
> We are using the below query inside the proc which is taking a long time
> to complete.
>
> *************************************************************
>
> SELECT seq_no+1 INTO pair_seq_no FROM SCHEMA.TABLE WHERE (Column1 like
> '%,sheath--'||cable_seq_id ||',%' or Column1 like 'sheath--'||cable_seq_id
> ||',%' or Column1 like '%,sheath--'||cable_seq_id or
> Column1='sheath--'||cable_seq_id) order by seq_no desc limit 1 ;
>
> ****************************************************************
>
> We have created an index on parental_path Column1 still it is taking 4secs
> to get the results.
>
> Could you please suggest a better way to execute the query.
>
> Thanks for your support.
>
> Regards,
> PostgAnn.
>
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