Re: Query optimization

From: Durgamahesh Manne <maheshpostgres9(at)gmail(dot)com>
To: Rob Sargent <robjsargent(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 02:39:46
Message-ID: CAJCZko+jAv98MZJp0T8KthDoWKdmhKTk-XukQJ1CR-v=+mSRhg@mail.gmail.com
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On Fri, 14 Mar, 2025, 08:04 Rob Sargent, <robjsargent(at)gmail(dot)com> wrote:

>
>
>
> 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?
>
Hi

Gave you plan with out limit . Stats up to date insert .....on conflict do
nothing runs some times

Regards
Durga Mahesh

>
>
>

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