Postgres has support for specifying NULL behavior in UNIQUE constraints since version 15.0 (released in 2022), with the same syntax as described in the article.

Postgres has support for specifying NULL behavior in UNIQUE constraints since version 15.0 (released in 2022), with the same syntax as described in the article. See the end of the documentation on unique constraints: https://www.postgresql.org/docs/15/ddl-constraints.html#DDL-CONSTRAINTS-UNIQUE-CONSTRAINTS https://www.postgresql.org/docs/15/ddl-constraints.html#DDL-...