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Developer-C 11.1
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CREATE TEMPORARY TABLE Yourtable (part_no varchar(100), store varchar(100)); insert into Yourtable values ('123','store a'),('123','store b'),('456','store b'),('456','store c'),('999','store c'); SELECT part_no, GROUP_CONCAT(store) as stores from Yourtable group by part_no; drop table Yourtable;
part_no
stores
123
store a,store b
456
store b,store c
999
store c