Re: Strange nested loop for an INSERT

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От Jim Nasby
Тема Re: Strange nested loop for an INSERT
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Msg-id 06b366f8-7e3d-ec7d-d146-1984818d3bcc@BlueTreble.com
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Ответ на Re: Strange nested loop for an INSERT  (phb07 <phb07@apra.asso.fr>)
Ответы Re: Strange nested loop for an INSERT  (phb07 <phb07@apra.asso.fr>)
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On 9/12/16 1:05 PM, phb07 wrote:
> The drawback is the overhead of this added ANALYZE statement. With a
> heavy processing like in this test case, it is worth to be done. But for
> common cases, it's a little bit expensive.

You could always look at the number of rows affected by a command and
make a decision on whether to ANALYZE based on that, possibly by looking
at pg_stat_all_tables.n_mod_since_analyze.
--
Jim Nasby, Data Architect, Blue Treble Consulting, Austin TX
Experts in Analytics, Data Architecture and PostgreSQL
Data in Trouble? Get it in Treble! http://BlueTreble.com
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