Only a few database engines have support for ASOF JOIN.<p>Originally implemented in ClickHouse in 2019: <a href="https://clickhouse.com/docs/en/sql-reference/statements/select/join#asof-join-usage" rel="nofollow noreferrer">https://clickhouse.com/docs/en/sql-reference/statements/sele...</a> but now in a few more database engines.