Artur Zając wrote: > Is there any reason that „NOT DISTINCT FROM” can’t be autotransformed to „=” when value > on right side of expression is not NULL or is this any way to use index with „IS NOT DISTINCT FROM” statement? That would subtly change the semantics of the expression: test=> SELECT NULL IS NOT DISTINCT FROM 21580; ?column? ---------- f (1 row) test=> SELECT NULL = 21580; ?column? ---------- (1 row) One expression is FALSE, the other NULL. It doesn't matter in the context of your specific query, but it could matter. Yours, Laurenz Albe -- Cybertec | https://www.cybertec-postgresql.com
