From: | Michael Lewis <mlewis(at)entrata(dot)com> |
---|---|
To: | Steve Midgley <science(at)misuse(dot)org> |
Cc: | Дмитрий Воронин <carriingfate92(at)yandex(dot)ru>, pgsql-sql(at)lists(dot)postgresql(dot)org |
Subject: | Re: |
Date: | 2022-02-01 20:10:53 |
Message-ID: | CAHOFxGoYkZaiGpe=xpLDeiS3xwN=vfstjp3iPJoMBOkkaHRd8A@mail.gmail.com |
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Lists: | pgsql-sql |
On Tue, Feb 1, 2022, 9:16 AM Steve Midgley <science(at)misuse(dot)org> wrote:
>
>
> On Tue, Feb 1, 2022 at 12:42 AM Дмитрий Воронин <carriingfate92(at)yandex(dot)ru>
> wrote:
>
>>
>> SELECT attrs FROM document_resinfo WHERE attrs @? '$.dates[*].datetime()
>> ? (@ >= "2020-10-02".datetime())';
>>
>> How can I create index on attrs field to query docids with other date?
>> Thanks.
>>
>>
>
> Have you tried just putting a default index on that column? I think it
> should work fine.
>
> CREATE INDEX attrs_idx ON test (attrs)
>
You'd want to use gin index type. Btree won't be very helpful.
I would consider a btree on the jsonb key itself.
One major hesitation I have with using jsonb much is that you don't get
statistics on the distribution of data (ndistinct, mcv, histogram, etc).
>
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