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Developer-C 11.1
3.0
4.0
10.2
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10.5
10.6
10.7
10.8
10.9
10.11
11.4
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12
13
14
15
16
17
2012
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CREATE TABLE mytable( Company VARCHAR(9) NOT NULL ,Type1 INTEGER ,Type2 INTEGER ,Type3 INTEGER ); INSERT INTO mytable(Company,Type1,Type2,Type3) VALUES ('Generic',1,NULL,3); INSERT INTO mytable(Company,Type1,Type2,Type3) VALUES ('Generic',NULL,2,2); INSERT INTO mytable(Company,Type1,Type2,Type3) VALUES ('Generic',3,2,NULL); INSERT INTO mytable(Company,Type1,Type2,Type3) VALUES ('Generic2',1,NULL,NULL); INSERT INTO mytable(Company,Type1,Type2,Type3) VALUES ('Generic2',NULL,2,2); INSERT INTO mytable(Company,Type1,Type2,Type3) VALUES ('Generic2',1,2,NULL);
select company, group_concat(distinct typex order by typex) res from ( select company, type1 typex from mytable union all select company, type2 from mytable union all select company, type3 from mytable ) t group by company
company
res
Generic
1,2,3
Generic2
1,2