ql/src/test/queries/clientpositive/antijoin_conversion.q

drop table if exists t;
drop table if exists n;

create table t(a string) stored as orc;
create table n(a string) stored as orc;

insert into t values ('a'),('1'),('2'),(null);
insert into n values ('a'),('b'),('1'),('3'),(null);

explain
select n.* from n left outer join t on (n.a=t.a) where cast(t.a as float) is null;
select n.* from n left outer join t on (n.a=t.a) where cast(t.a as float) is null;
select assert_true(count(1)=4) from n left outer join t on (n.a=t.a) where cast(t.a as float) is null;

set hive.auto.convert.anti.join=false;
explain
select n.* from n left outer join t on (n.a=t.a) where cast(t.a as float) is null;
select n.* from n left outer join t on (n.a=t.a) where cast(t.a as float) is null;
select assert_true(count(1)=4) from n left outer join t on (n.a=t.a) where cast(t.a as float) is null;