ydb/yql/essentials/tests/sql/suites/datetime/date_tz_io.sql

/* postgres can not */
select
    cast(cast(TzDate("2000-01-01,Europe/Moscow") as string) as TzDate),
    cast(cast(TzDatetime("2000-01-01T01:02:03,Europe/Moscow") as string) as TzDatetime),
    cast(cast(TzTimestamp("2000-01-01T01:02:03.456789,Europe/Moscow") as string) as TzTimestamp);