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Re: PG 10 experience different user execute same sql get different access plan - Mailing list pgsql-general

From Tom Lane
Subject Re: PG 10 experience different user execute same sql get different access plan
Date
Msg-id 3430781.1621436418@sss.pgh.pa.us
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In response to PG 10 experience different user execute same sql get different access plan  (Zhiyu ZY13 Xu <xuzy13@lenovo.com>)
Responses 回复: [External] Re: PG 10 experience different user execute same sql get different access plan
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Zhiyu ZY13 Xu <xuzy13@lenovo.com> writes:
>   I experience a PG optimizer problem. Different user query with same SQL at same time. But get different access
plan.

If you've got row-level security turned on for that table, it could
explain results like this.  RLS limits the planner's ability to
see statistics, which can easily result in a worse plan.

            regards, tom lane

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