On 1/21/22 13:55, James Coleman wrote: > On Thu, Jan 20, 2022 at 3:43 PM James Coleman <jtc...@gmail.com> wrote: >> As noted earlier I expect to be posting an updated patch soon. > Here's the updated series. In 0001 I've moved the documentation tweak > into the ALTER TABLE notes section. In 0002 I've taken David J's > suggestion of shortening the "Tip" on the DDL page and mostly using it > to point people to the Notes section on the ALTER TABLE page.
I don't really like the first part of patch 1, but as it gets removed by patch 2 we can move past that. + Before <productname>PostgreSQL</productname> 11, adding a new column to a + table required rewriting that table, making it a very slow operation. + More recent versions can sometimes optimize away this rewrite and related + validation scans. See the notes in <command>ALTER TABLE</command> for details. I know what it's replacing refers to release 11, but let's stop doing that. How about something like this? Adding a new column can sometimes require rewriting the table, making it a very slow operation. However in many cases this rewrite and related verification scans can be optimized away by using an appropriate default value. See the notes in <command>ALTER TABLE</command> for details. cheers andrew -- Andrew Dunstan EDB: https://www.enterprisedb.com