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Developer-C 11.1
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4.0
10.2
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10.5
10.6
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10.9
5.5
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2012
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CREATE TABLE TableA( id VARCHAR(20), id_2 VARCHAR(20), thing VARCHAR(20) ); INSERT TableA (id,id_2,thing) VALUES('t01','乖乖','好乖'); INSERT TableA (id,id_2,thing) VALUES('t02','乖乖','好乖'); INSERT TableA (id,id_2,thing) VALUES('t03','可樂果','想想'); INSERT TableA (id,id_2,thing) VALUES('t04','果汁','好渴');
SELECT GROUP_CONCAT(id),id_2,thing FROM TableA GROUP BY id_2,thing
GROUP_CONCAT(id)
id_2
thing
t03
可樂果
想想
t04
果汁
好渴
t01,t02
乖乖
好乖