Hi, I tested the latest v6 patch on current master with a few different scenarios.For the simple int to constrained-domain type change case,the scan-only patch was used and the relfilenode stayed unchanged before and after ALTER TABLE ,so the rewrite was avoided as expected. I also tried USING expression cases,invalid domain values,and NULL values.The behavior looked correct in those cases as well. I tested with both small tables and a 1M row table.
Regards, Solai
