Re: proposal: plpgsql - iteration over fields of rec or row variable - Mailing list pgsql-hackers

On Mon, Nov 8, 2010 at 3:02 PM, Dmitriy Igrishin <dmitigr@gmail.com> wrote:
> Hey Pavel, Tom, Merlin,
>
> As a user, I would like to work with records by using simple API:
>
>   -- Returns a number of key/values pairs of record.
>   nKeys_ integer := nRecordKeys(NEW);
>
>   -- Returns an i-th key.
>   key_i text := recordKey(NEW, i);
>
>   -- Returns an i-th value.
>   value1_ text := recordValueByIndex(NEW, i);
>
>   -- Returns an value by named key.
>   value2_ text := recordValueByName(NEW, "id");
>
> and so on...

This doesn't really solve the problem -- you need some participation
from plpgsql because function behavior post-plan time can not be
ambiguous.

merlin