--disable_warnings
drop database if exists MCOL_5643;
--enable_warnings
create database MCOL_5643;

use MCOL_5643;

create table t1
(
        id int,
        someStr varchar(100)
) ENGINE=Columnstore;

create table t2
(
        id int,
        fk_t1 int,
        someStr varchar(100)
) ENGINE=Columnstore;

insert into t1 values (1, 'bla');
insert into t2 values (1, 1, 'xyz');

create view view_on_t1 as select id, someStr from t1;
create view view_on_t2 as select id, fk_t1, someStr from t2;

# ERROR !!!
select max(view_on_t1.id), view_on_t1.someStr, view_on_t2.someStr
from view_on_t1
left outer join view_on_t2
on view_on_t1.id = view_on_t2.fk_t1
group by view_on_t1.someStr, view_on_t2.someStr;
# ==> All non-aggregate columns in the SELECT and ORDER BY clause must be included in the GROUP BY clause. 0.063 sec

drop database MCOL_5643;