Re: index on a box

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От Dustin Sallings
Тема Re: index on a box
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Msg-id Pine.OSX.4.33.0106211358420.396-100000@dustinmobile
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Ответ на Re: index on a box  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: index on a box  (Tom Lane <tgl@sss.pgh.pa.us>)
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Around 11:08 on Jun 21, 2001, Tom Lane said:

# If you say "SET enable_seqscan TO off", and repeat the EXPLAIN, do you
# get an indexscan plan?

Seq Scan on tmp  (cost=100000000.00..100002500.84 rows=30434 width=92)

# I don't recommend doing such a SET for production purposes, but if
# this works then the problem is just inaccurate selectivity/cost
# estimation. I see that the on_pb operator has no selectivity estimator
# defined at all :-( ... as a quick hack, try setting its oprrest and
# oprjoin to be areasel and areajoinsel.

    I'm not sure what you just said.  :)

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