Re: PostgreSQL 16 release announcement draft - Mailing list pgsql-hackers

From jian he
Subject Re: PostgreSQL 16 release announcement draft
Date
Msg-id CACJufxGNvaSdEk_BWBpMyb=p_0uhs6RMtH3tdc6TeweOdm51DQ@mail.gmail.com
Whole thread Raw
In response to Re: PostgreSQL 16 release announcement draft  (jian he <jian.universality@gmail.com>)
Responses Re: PostgreSQL 16 release announcement draft
List pgsql-hackers
>>>
PostgreSQL 16 improves the performance of existing PostgreSQL functionality
through new query planner optimizations. In this latest release, the query
planner can parallelize  `FULL` and `RIGHT` joins, utilize incremental sorts for
`SELECT DISTINCT` queries, and execute window functions more efficiently. It
also introduces `RIGHT` and `OUTER` "anti-joins", which enable users to identify
rows not present in a joined table.
>>>

I think "utilize incremental sorts is for" something like select
my_avg(distinct one),my_sum(one) from (values(1),(3)) t(one);
so it's not the same as `SELECT DISTINCT` queries?
ref: https://git.postgresql.org/cgit/postgresql.git/commit/?id=1349d2790bf48a4de072931c722f39337e72055e

also
<<<< "the query planner ....., and execute window functions more efficiently."
since the query planner doesn't execute anything. probably "and
optimize window functions execution"?



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