Re: PostgreSQL 15 Beta 4 release announcement draft

Hi Jonathan,

On 2022-Sep-06, Jonathan S. Katz wrote:

> * [`MERGE`](https://www.postgresql.org/docs/15/sql-merge.html) statements are
> explicitly rejected inside of a
> [common-table expression](https://www.postgresql.org/docs/15/queries-with.html)
> (aka `WITH` query) and
> [`COPY`](https://www.postgresql.org/docs/15/sql-copy.html) statements.

I would say "Avoid crash in MERGE when called inside COPY or a CTE by
throwing an error early", so that it doesn't look like we're removing a
feature.

Thank you for putting this together!

-- 
Álvaro Herrera               48°01'N 7°57'E  —  https://www.EnterpriseDB.com/
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