Re: Request for improvement: Allow to push (t.o).id via GROUP BY ocd.o

And, probably, next query belongs to same issue:

SELECT
--next_ots.group_cost AS next_cost,
(SELECT next_ots FROM order_total_suma( next_range ) next_ots
WHERE next_ots.order_id = ots.order_id AND next_ots.consumed_period @> (ots.o).billed_to
) AS next_suma, -- << this takes 111ms only
ots.* FROM (
SELECT
tstzrange(
NULLIF( (ots.o).billed_to, 'infinity' ),
NULLIF( (ots.o).billed_to +p.interval, 'infinity' )
) as next_range,
ots.*
FROM order_total_suma() ots
LEFT JOIN period p ON p.id = (ots.o).period_id
) ots
--LEFT JOIN order_total_suma( next_range ) next_ots ON next_ots.order_id = 6154 --<< this is fine
-- AND next_ots.consumed_period @> (ots.o).billed_to
--LEFT JOIN order_total_suma( next_range ) next_ots ON next_ots.order_id = ots.order_id --<< this takes 11500ms
-- AND next_ots.consumed_period @> (ots.o).billed_to
WHERE ots.order_id IN ( 6154, 10805 )

id is not pushed for LEFT JOIN

I have attached plans:

--
Best regards,
Eugen Konkov