Re: More stable query plans via more predictable column statistics

Поиск
Список
Период
Сортировка
От Shulgin, Oleksandr
Тема Re: More stable query plans via more predictable column statistics
Дата
Msg-id CACACo5SUovv4oXAeo_7CyeSdumGCZ0k-0BknvQfSU8d1KM1L9g@mail.gmail.com
обсуждение исходный текст
Ответ на Re: More stable query plans via more predictable column statistics  (Alvaro Herrera <alvherre@2ndquadrant.com>)
Ответы Re: More stable query plans via more predictable column statistics  (Robert Haas <robertmhaas@gmail.com>)
Список pgsql-hackers
Дерево обсуждения
On Wed, Mar 2, 2016 at 7:33 PM, Alvaro Herrera <alvherre@2ndquadrant.com> wrote:
Shulgin, Oleksandr wrote:

> Alright.  I'm attaching the latest version of this patch split in two
> parts: the first one is NULLs-related bugfix and the second is the
> "improvement" part, which applies on top of the first one.

So is this null-related bugfix supposed to be backpatched?  (I assume
it's not because it's very likely to change existing plans).

For the good, because cardinality estimations will be more accurate in these cases, so yes I would expect it to be back-patchable.

-- 
Alex

В списке pgsql-hackers по дате отправления:

Предыдущее
От: Andres Freund
Дата:
Сообщение: Re: Confusing with commit time usage in logical decoding
Следующее
От: Craig Ringer
Дата:
Сообщение: Re: Dockerfile for testing with Perl 5.8.8