On 9/23/25 12:20, Frédéric Yhuel wrote:
> On 9/22/25 23:15, Andrei Lepikhov wrote:
>> I'm not sure I fully understand your case, but SQL Server demonstrates
>> an interesting approach: they have a WHERE clause attached to
>> statistics. So, having implemented this, you may separate the whole
>> range of values inside the table into 'partitions' by such a WHERE
>> condition.
>
> Yes, from what I understood of the documentation [1], this is exactly
> what I would like!
I've tested it and I can confirm that it works very well.
So, on SQL Server, you can do this:
CREATE STATISTICS FooStats ON foo (ackid, crit) WHERE crit = 'WARNING';
It would be great to have a similar feature in PostgreSQL.
