Re: Note new NULLS NOT DISTINCT on unique index tutorial page
Corey Huinker <corey.huinker@gmail.com>
From: Corey Huinker <corey.huinker@gmail.com>
To: David Gilman <davidgilman1@gmail.com>
Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2023-04-17T17:01:37Z
Lists: pgsql-hackers
On Wed, Apr 12, 2023 at 10:40 AM David Gilman <davidgilman1@gmail.com> wrote: > The SQL Language part of the docs has a brief page on unique indexes. > It doesn't mention the new NULLS NOT DISTINCT functionality on unique > indexes and this is a good place to mention it, as it already warns > the user about the old/default behavior. > > I'm ok with the wording as-is, but perhaps we can phrase it as "distinct" vs "not equal", thus leaning into the syntax a bit: By default, null values in a unique column are considered distinct, allowing multiple nulls in the column. or maybe By default, null values in a unique column are considered <literal>DISTINCT</literal>, allowing multiple nulls in the column.
Commits
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Doc: clarify NULLS NOT DISTINCT use in unique indexes
- 94d73f9abdf1 15.3 landed
- 0d0aeb04c127 16.0 landed