Re: Is it useful to record whether plans are generic or custom?

legrand legrand <legrand_legrand@hotmail.com>

From: legrand legrand <legrand_legrand@hotmail.com>
To: pgsql-hackers@postgresql.org
Date: 2020-05-13T17:28:12Z
Lists: pgsql-hackers
Hello,

yes this can be usefull, under the condition of differentiating all the
counters
for a queryid using a generic plan and the one using a custom one.

For me one way to do that is adding a generic_plan column to 
pg_stat_statements key, someting like:
- userid,
- dbid,
- queryid,
- generic_plan

I don't know if generic/custom plan types are available during planning
and/or 
execution hooks ...

Regards
PAscal




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Commits

  1. Add generic_plans and custom_plans fields into pg_prepared_statements.