DROP DATABASE IF EXISTS mcol_5522; CREATE DATABASE mcol_5522; USE mcol_5522; create table t1 (a int) engine=columnstore; create table t2 (a int) engine=columnstore; insert into t1 values (1), (2), (3), (4); insert into t2 values (1), (2), (3), (4); create table t3 (a varchar(200)) engine=columnstore; create table t4 (a varchar(200)) engine=columnstore; insert into t3 values ("one"), ("two"), ("three"); insert into t4 values ("one"), ("two"), ("three"); set session columnstore_max_pm_join_result_count=1; select * from t1, t2 where t1.a = t2.a; a a 1 1 2 2 3 3 4 4 select * from t3, t4 where t3.a = t4.a; a a one one two two three three set session columnstore_max_pm_join_result_count=1048576; select * from t1, t2 where t1.a = t2.a; a a 1 1 2 2 3 3 4 4 select * from t3, t4 where t3.a = t4.a; a a one one two two three three DROP DATABASE mcol_5522;