USE tpch1;
select * from sub2;
c1	c2	c3	s1	s2	s3
1	1	1	1	1	1
1	2	2	2	2	2
1	3	3	3	3	3
2	4	4	4	4	4
2	5	5	5	5	5
2	NULL	NULL	NULL	NULL	NULL
6	2	2	2	2	2