ql/src/test/queries/clientnegative/cbo_fallback_conservative_subquery_exception.q

--! qt:dataset:part
-- =ALL is not allowed and initially triggers a CalciteSubquerySemanticException
set hive.cbo.fallback.strategy=CONSERVATIVE;
-- In CONSERVATIVE mode CalciteSubquerySemanticException is fatal
-- and should be present in the error message
explain select * from part where p_type = ALL(select max(p_type) from part);