Обсуждение: How to profile an "SQL script"?

Hi.  I have a longish collection of SQL statements stored in a file that I run periodically via cron.  Running this "script" takes a bit too long, even for a cron job, and I would like to streamline it.

Kynn Jones <kynnjo@gmail.com> schrieb:

> Hi.  I have a longish collection of SQL statements stored in a file that I run
> periodically via cron.  Running this "script" takes a bit too long, even for a
> cron job, and I would like to streamline it.
>
> Is there a way to tell Postgres to print out, after each SQL statement is
> executed, how long it took to execute?

Do you run this with psql? You can switch on timing-output, with
\timing. It displays after each statement the run-time for this
statement.


Andreas
--
Really, I'm not out to destroy Microsoft. That will just be a completely
unintentional side effect.                              (Linus Torvalds)
"If I was god, I would recompile penguin with --enable-fly."   (unknown)
Kaufbach, Saxony, Germany, Europe.              N 51.05082°, E 13.56889°

Andreas Kretschmer wrote:
> Kynn Jones <kynnjo@gmail.com> schrieb:
>
>> Hi.  I have a longish collection of SQL statements stored in a file that I run
>> periodically via cron.  Running this "script" takes a bit too long, even for a
>> cron job, and I would like to streamline it.
>>
>> Is there a way to tell Postgres to print out, after each SQL statement is
>> executed, how long it took to execute?
>
> Do you run this with psql? You can switch on timing-output, with
> \timing. It displays after each statement the run-time for this
> statement.

See also log_duration and log_min_duration settings.

--
   Heikki Linnakangas
   EnterpriseDB   http://www.enterprisedb.com

Thanks!