Re: Query optimization

From: Rob Sargent <robjsargent(at)gmail(dot)com>
To: Durgamahesh Manne <maheshpostgres9(at)gmail(dot)com>
Cc: Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com>, pgsql-general <pgsql-general(at)lists(dot)postgresql(dot)org>, laurenz(dot)albe(at)cybertec(dot)at
Subject: Re: Query optimization
Date: 2025-03-14 02:34:15
Message-ID: 77CFD347-1A36-4A78-8D95-21569977C0A5@gmail.com
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>
> 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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