On 10/31/24 21:00, Alena Rybakina wrote:
On 29.10.2024 05:47, Andrei Lepikhov wrote:
I played around with the examples a bit and couldn't figure out
something. When I added the same values to different columns - firstly
in a, later in b, the order of the columns for sort operation doesn't
change. Isn't this a mistake?
This feature implements a cost-based approach to choosing the grouping
clauses' order. What kind of 'mistake' do you see here? Is there
something wrong with the costs, or do you see a bug in the cost
calculation code? Please specify your request.
--
regards, Andrei Lepikhov
