sqlite - 如何避免 GROUP_CONCAT 中的重复？

Question

如果它们属于一个组，我有查询连接字符串。

    SELECT e.id, 
        ke.value,
        re.value AS re_value,
        GROUP_CONCAT(g.value,', ')
        FROM entry e
                INNER JOIN k_ele ke ON e.id = ke.fk
                INNER JOIN r_ele re ON e.id = re.fk
                INNER JOIN sense s ON e.id = s.fk
                INNER JOIN gloss g ON s.id = g.fk
WHERE g.lang IS NULL
GROUP BY s.id
ORDER BY re_value

但是

GROUP_CONCAT(g.value,', ')

给出了这个结果。

affectionate relationship, affectionate relationship, affectionate relationship, affectionate relationship, loving relationship, loving relationship, loving relationship, loving relationship

如您所见，连接中存在重复。如何避免串联中的重复？

Answer 1

GROUP_CONCAT(DISTINCT g.value)