是否可以水平显示属性.
例如,我有这样的表:
而且简单
SELECT user.name, project.name
FROM user
LEFT JOIN project ON user.project_id = project.id;
给我
User #1,Project #1
User #2,Project #1
User #3,Project #2
是否有可能收到这样的结果?在一列项目名称和所有相关用户.
Project #1
User #1
User #2
Project #2
User #3
最佳答案 我认为您可以使用UNION查询以及几个内联列生成所需的输出以对输出进行排序.
SELECT t.name
FROM
(
SELECT DISTINCT project.name AS name,
project.id AS id,
0 AS idx
FROM user
LEFT JOIN project
ON user.project_id = project.id
UNION ALL
SELECT user.name,
project.id,
1
FROM user
LEFT JOIN project
ON user.project_id = project.id
) t
ORDER BY t.id,
t.idx,
t.name