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help / color / mirror / Atom feedFrom: Andy Fan <[email protected]>
To: Tom Lane <[email protected]>
Cc: Pavel Stehule <[email protected]>
Cc: jian he <[email protected]>
Cc: pgsql-hackers <[email protected]>
Subject: Re: Extract numeric filed in JSONB more effectively
Date: Mon, 14 Aug 2023 15:06:30 +0800
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<[email protected]>
>
>
> We'd still have functions like jsonb_field_as_numeric() under the
> hood, but there's not an expectation that users call them explicitly.
>
To avoid the lots of functions like jsonb_field_as_int2/int4, I defined
Datum jsonb_object_field_type(.., Oid target_oid) at last, so the
function must return "internal" or "anyelement". Then we can see:
select jsonb_object_field_type(tb.a, 'a'::text, 1700) from tb;
ERROR: cannot display a value of type anyelement.
The reason is clear to me, but I'm not sure how to fix that or deserves
a fix? Or shall I define jsonb_object_field_int2/int8 to avoid this?
This is an unresolved issue at the latest patch.
--
Best Regards
Andy Fan
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Subject: Re: Extract numeric filed in JSONB more effectively
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