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From: Rob Sargent <[email protected]>
To: Durgamahesh Manne <[email protected]>
Cc: Adrian Klaver <[email protected]>
Cc: pgsql-general <[email protected]>
Cc: [email protected]
Subject: Re: Query optimization
Date: Thu, 13 Mar 2025 20:34:15 -0600
Message-ID: <[email protected]> (raw)
In-Reply-To: <CAJCZkoLSaApgwHuWepO4EUENtjKMy1oX+GpEsFW4D+gFKoN_GQ@mail.gmail.com>
References: <CAJCZkoL+DHs0H9enQEg8JXZw=7032zrmFKG8Vx0fup6_wqNpnQ@mail.gmail.com>
	<[email protected]>
	<CAJCZkoLSaApgwHuWepO4EUENtjKMy1oX+GpEsFW4D+gFKoN_GQ@mail.gmail.com>



> 
> 3) Output of EXPLAIN ANALYZE of query.
> 
>  Result  (cost=2.80..2.83 rows=1 width=1) (actual time=0.030..0.030 rows=1 loops=1)
>    InitPlan 1 (returns $0)
>      ->  Index Only Scan using idx_cachekeys on cachekeys  (cost=0.55..2.80 rows=1 width=0) (actual time=0.029..0.029 rows=1 loops=1)
>            Index Cond: ((cachetype = 'BoMatrix'::text) AND (trsid = 'daznbetuk'::text) AND (brandid = 'daznbet'::text) AND (sportid = 'BOX'::text) AND (competitionid = 'U-1998'::text) AND (eventid = 'U-523596'::text))
>            Heap Fetches: 0
>  Planning Time: 0.221 ms
>  Execution Time: 0.046 ms
> 


And is the explain analyze output if from your original query:
"SELECT EXISTS (SELECT Key FROM CACHEKEYS WHERE CacheType = $1 AND TrsId = $2 AND BrandId = $3 AND SportId = $4 AND CompetitionId = $5 AND EventId = $6 AND MarketId = $7 LIMIT ?)”

Has there been any significant addition of rows recently? i.e. are the statistics up-to-date for that table?

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