MySQL：对 GROUP_CONCAT 值进行排序

小编典典

MySQL：对 GROUP_CONCAT 值进行排序

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简而言之：有没有办法对 GROUP_CONCAT 语句中的值进行排序？

询问：

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

我得到这一行：

Crafts » Joinery

Administration » Organization

我想要这样：

Administration » Organization

Crafts » Joinery

阅读 79

2022-07-09

共1个答案

小编典典

当然，请参阅 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;

2022-07-09