group_concat

group_concat([DISTINCT] 要链接的字段 [Order BY ASC/DESC 排序字段] [Separator '分隔符'])

 

SELECT id,GROUP_CONCAT(score) FROM testgroup GROUP BY id;

SELECT id,GROUP_CONCAT(DISTINCT score) FROM testgroup GROUP BY id;

SELECT id,GROUP_CONCAT(score ORDER BY score DESC) FROM testgroup GROUP BY id;

SELECT id,GROUP_CONCAT(score SEPARATOR ';') FROM testgroup GROUP BY id;