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help / color / mirror / Atom feedFrom: jian he <[email protected]>
To: Chapman Flack <[email protected]>
Cc: Andy Fan <[email protected]>
Cc: Pavel Stehule <[email protected]>
Cc: Tom Lane <[email protected]>
Cc: pgsql-hackers <[email protected]>
Subject: Re: Extract numeric filed in JSONB more effectively
Date: Fri, 18 Aug 2023 13:02:55 +0800
Message-ID: <CACJufxHv+Yo+ivq5u+cjo9Fa=SyfvA-V4CLePuS0JgLiC-yCBQ@mail.gmail.com> (raw)
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On Fri, Aug 18, 2023 at 10:55 AM Chapman Flack <[email protected]> wrote:
>
>
> Again, all of that complication stems from the choice to use the
> anyelement return type and rely on polymorphic type resolution
> to figure the oid out, when we already have the oid to begin with
> and the oid is all we want.
>
you want jsonb_object_field_type(internal, jsonb, text)? because on
sql level, it's safe.
The return data type is determined when we are in jsonb_cast_support.
we just need to pass the {return data type} information to the next
function: jsonb_object_field_type.
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Subject: Re: Extract numeric filed in JSONB more effectively
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