| From: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
|---|---|
| To: | Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Sergei Kornilov <sk(at)zsrv(dot)org>, Vik Fearing <vik(dot)fearing(at)2ndquadrant(dot)com>, Haribabu Kommi <kommi(dot)haribabu(at)gmail(dot)com>, Michael Paquier <michael(at)paquier(dot)xyz>, Magnus Hagander <magnus(at)hagander(dot)net>, Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, Ashutosh Sharma <ashu(dot)coek88(at)gmail(dot)com>, Euler Taveira de Oliveira <euler(at)timbira(dot)com(dot)br>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Dave Page <dpage(at)pgadmin(dot)org> |
| Subject: | Re: New function pg_stat_statements_reset_query() to reset statistics of a specific query |
| Date: | 2018-12-16 14:28:46 |
| Message-ID: | 20181216142846.zb6jggzjjccab335@alvherre.pgsql |
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| Lists: | pgsql-hackers |
On 2018-Dec-15, Peter Eisentraut wrote:
> An example:
>
> select pg_stat_statements_reset(
> 10,
> (select min(oid) from pg_database where datname like 'test%'),
> 1234);
>
> (This is obviously a weird example, but it illustrates the
> language-theoretic point.)
This is not at all weird. Lack of clarity on this point is the reason
that spawned this whole sub-thread, because a reset was removing data
that was not about the query that was intended.
--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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