MySQL：排序组_Concat值

简而言之：有没有办法对组_Concat语句中的值进行排序？

查询：

GROUP_CONCAT((SELECT GROUP_CONCAT(parent.name SEPARATOR " &raquo; ")
FROM test_competence AS node, test_competence AS parent
WHERE node.lft BETWEEN parent.lft AND parent.rgt
AND node.id = l.competence
AND parent.id != 1
ORDER BY parent.lft) SEPARATOR "<br />\n") AS competences

我得到了这一排：

工艺品»；细木工

管理»；组织

我想要这样的：

管理»；组织

工艺品»；细木工

mysql
sorting
sql-order-by
group-concat

103503 次浏览

小开

最佳答案

Sure, see http://dev.mysql.com/doc/refman/...tions.html#function_group-concat:

SELECT student_name,
GROUP_CONCAT(DISTINCT test_score ORDER BY test_score DESC SEPARATOR ' ')
FROM student
GROUP BY student_name;

小开

Do you mean to order by?

SELECT _key,
COUNT(*) as cnt,
GROUP_CONCAT(_value ORDER BY _value SEPARATOR ', ') as value_list
FROM group_concat_test
GROUP BY _key
ORDER BY _key;