-- MCOL-1155
-- I can work around with colum1 is not null and column2 is null... 
-- but should it work with NOT (column1 <=> column2)? Here's an example.

DROP TABLE if exists t1;

CREATE TABLE t1 ( c1 int, c2 float, c3 char(10)) engine = columnstore;
insert into t1 values(1,1.0, 'one'), (2,2.0, 'two'), (3, 3.1, 'three');

select * from t1 where c1 = c2;
select * from t1 where not c1 = c2;
select * from t1 where c1 <=> c2;
select * from t1 where not c1 <=> c2;

