Ow Mun Heng wrote:
> Hi,
> 
> Is there a method to obtain the query's runtime from any of the pg_*
> tables?

No.  You can use log_durations and log_statement for that.  We don't
store that info in tables.

> Right now, I'm only seeing the backend_start_time (from
> pg_stat_activity) (and I'm also not sure how to interpret this.

This is the time that the session was started.  Nothing to do with the
query itself.

-- 
Alvaro Herrera                                http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support

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