Jim, Kevin,

> > Hrm... I was about to suggest that for timing just the query (and not
> > output/data transfer time) using explain analyze, but then I remembered
> > that explain analyze can incur some non-trivial overhead with the timing
> > calls. Is there a way to run the query but have psql ignore the output?
> > If so, you could use \timing.
> Would timing "SELECT COUNT(*) FROM (query)" work?

Just \timing would work fine; PostgreSQL doesn't return anything until it has 
the whole result set.  That's why MSSQL vs. PostgreSQL timing comparisons are 
deceptive unless you're careful:  MSSQL returns the results on block at a 
time, and reports execution time as the time required to return the *first* 
block, as opposed to Postgres which reports the time required to return the 
whole dataset.

Josh Berkus
Aglio Database Solutions
San Francisco

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