USE tpch1;
select * from sub4;
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
2	7	8	9	10	11
2	8	9	10	11	12
2	2	2	2	2	2
3	3	3	4	5	6
1	1	2	2	2	2