ydb/yql/essentials/tests/sql/suites/pg/join_using_multiple1.sql

--!syntax_pg
select a.fooo as x, b.fooo as y, c.fooo as z, fooo from (
    (select 1 as fooo) a
    full join
    (select 2 as fooo) b
    using (fooo)
    full join
    (select 3 as fooo) c
    using(fooo)) order by fooo