On Wednesday, May 15, 2024, jian he <
jian.universality@gmail.com> wrote:
On Thu, May 9, 2024 at 12:04 PM Bruce Momjian <bruce@momjian.us> wrote:
>
> I have committed the first draft of the PG 17 release notes; you can
> see the results here:
>
> https://momjian.us/pgsql_docs/release-17.html
>
in section: E.1.2. Migration to Version 17
>> Rename I/O block read/write timing statistics columns of pg_stat_statement (Nazir Bilal Yavuz)
>> This renames "blk_read_time" to "shared_blk_read_time", and "blk_write_time" to "shared_blk_write_time".
we only mentioned, pg_stat_statements some columns name changed
in "E.1.2. Migration to Version 17"
but if you look at the release note pg_stat_statements section,
we added a bunch of columns, which are far more incompatibile than
just colunm name changes.
not sure we need add these in section "E.1.2. Migration to Version 17"
New columns are not a migration issue since nothing being migrated forward ever referenced them. Its the ones that existing code knows about that we’ve removed (including renames) that matter from a migration perspective.
David J.
