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From: Laurenz Albe <[email protected]>
To: Attila Soki <[email protected]>
Cc: [email protected]
Subject: Re: unstable query plan on pg 16,17,18
Date: Mon, 23 Feb 2026 22:44:00 +0100
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
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On Mon, 2026-02-23 at 22:19 +0100, Attila Soki wrote:
> To "switch" between the ok and wrong plans I execute
> vacuumdb -Upostgres -vZ -t schema1.table_k db1
> multiple times (1x-3x) until the plan flips. So I thought the table should already have been analyzed.
> In my first email I called table_k as the "tbl_used_in_query"

Ok, I see.  Then a simple ANALYZE won't do.

Perhaps the column needs more detailed statistics?

  ALTER TABLE schema1.table_k ALTER dp_end_dat SET STATISTICS 1000;
  ANALYZE schema1.table_k (dp_end_dat);

> or have I misunderstood that with the analyze?

No; I missed that point.

Yours,
Laurenz Albe

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