On 05/04/2017 01:33 PM, Alvaro Herrera wrote:
> Andrew Dunstan wrote:
>
>> Hadn't though about LATERAL, good point. Still, there will be other cases.
> I'm not sure what your point is. We know that for some cases the
> optimization barrier semantics are useful, which is why the proposal is
> to add a keyword to install one explicitely:
>
> with materialized r as
> (
> select json_populate_record(null::mytype, myjson) as x
> from mytable
> )
> select (x).*
> from r;
>
> this would preserve the current semantics.
>
I understand. Some people appear to think hardly anyone will actually
need this - that's what I was arguing against.
cheers
andrew
--
Andrew Dunstan https://www.2ndQuadrant.com
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