Sort bug

Started by okijhhyuover 3 years ago3 messagesbugs
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#1okijhhyu
okijhhyu@gmail.com

Good morning, dear friends.

In sorting by DESC null in up and ASC ‘’ in up, why them not near?

Respectfully yours, okijhhyu

#2Daniel Gustafsson
daniel@yesql.se
In reply to: okijhhyu (#1)
Re: Sort bug

On 14 Dec 2022, at 08:20, okijhhyu <okijhhyu@gmail.com> wrote:

In sorting by DESC null in up and ASC ‘’ in up, why them not near?

I'm not sure I understand, can you show a small query which exhibits the
behavior you believe is buggy and explain what you think should've happened?

--
Daniel Gustafsson https://vmware.com/

#3Pavel Borisov
pashkin.elfe@gmail.com
In reply to: okijhhyu (#1)
Re: Sort bug

Good morning, dear friends.

In sorting by DESC null in up and ASC ‘’ in up, why them not near?

Respectfully yours, okijhhyu

NULLS are not empty values but undefined values. Nevertheless, in
PostgreSQL there is the following default order for their sorting: "By
default, null values sort as if larger than any non-null value; that
is, NULLS FIRST is the default for DESC order, and NULLS LAST
otherwise." (https://www.postgresql.org/docs/current/queries-order.html).

Nulls ordering can be changed by. The NULLS FIRST and NULLS LAST
options can be used to determine whether nulls appear before or after
non-null values in the sort ordering.

Do you see this or something contrary to?

Best regards,
Pavel Borisov,
Supabase