PostgreSQL 15 will include COPY FREEZE support
In my blog post I reported that a patch to allow to use COPY FREEZE in pgbench was accepted for upcoming PostgreSQL 15 (supposed to be released by the end of 2022). It seems the patch has survived without being reverted!
But it will not be in the release note
Now that PostgreSQL 15 beta1 is coming soon, I checked the proposed release note for PostgreSQL 15 beta1. Unfortunately it does not mention anything about COPY FREEZE support in pgbench. Don't worry. The code for supporting COPY FREEZE in pgbench is surely in PostgreSQL 15. Please try PostgreSQL 15 beta1 once it is out!