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Re: psql microsecond timing patch

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: greg(at)turnstep(dot)com, pgsql-patches(at)postgresql(dot)org
Subject: Re: psql microsecond timing patch
Date: 2001-09-28 19:43:36
Message-ID: 200109281943.f8SJhaf13991@candle.pha.pa.us (view raw or flat)
Thread:
Lists: pgsql-patches
> greg(at)turnstep(dot)com writes:
> > This is a small patch to allow you to time your queries in 
> > psql. Myself and some others have been using it and find it 
> > useful for telling how long an actual specific query takes, 
> > as opposed to EXPLAIN which just does an estimate.
> 
> Hmm.  Is there any value in this now that we have EXPLAIN ANALYZE?
> 
> Microsecond-level timing on the client side seems like a dubious
> proposition anyway ...

FYI, EXPLAIN ANALYZE will appear in 7.2:

test=> EXPLAIN ANALYZE SELECT * FROM pg_class;
NOTICE:  QUERY PLAN:

Seq Scan on pg_class  (cost=0.00..3.01 rows=101 width=115) (actual
time=0.06..1.97 rows=101 loops=1)
Total runtime: 2.51 msec

EXPLAIN

-- 
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman(at)candle(dot)pha(dot)pa(dot)us               |  (610) 853-3000
  +  If your life is a hard drive,     |  830 Blythe Avenue
  +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026

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