| From: | "Jonathan S(dot) Katz" <jkatz(at)postgresql(dot)org> |
|---|---|
| To: | Erik Rijkers <er(at)xs4all(dot)nl>, PostgreSQL Advocacy <pgsql-advocacy(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Feature matrix updates |
| Date: | 2022-07-19 01:32:34 |
| Message-ID: | 621477f9-692b-8739-0b57-22d5b7a8aead@postgresql.org |
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| Lists: | pgsql-advocacy |
On 7/17/22 4:18 PM, Erik Rijkers wrote:
> On 7/17/22 20:34, Jonathan S. Katz wrote:
>> Hi,
>>
>> Please see updates for the feature matrix in advance of the PostgreSQL
>> 15 release:
>>
>> https://www.postgresql.org/about/featurematrix/
>>
>> In addition to adding information about new features in PostgreSQL
>> 15[1][2], this version of the feature matrix adds additional
>> categories including:
>>
>> * Replication
>> * JSON
>> * Transactions and Visibility
>> * VACUUM and Maintenance
>> * Client Applications
>
> Perhaps add one item for
>
> * Indexing & Constraints
>
> to wit:
>
> -----
> "Allow unique constraints and indexes to treat NULL values as not
> distinct (Peter Eisentraut)
>
> Previously NULL values were always indexed as distinct values, but this
> can now be changed by creating constraints and indexes using UNIQUE
> NULLS NOT DISTINCT."
> -----
Agreed, that was an unintended omission. I've added an entry for this.
Thanks!
Jonathan
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