Question

我正在尝试按名称对这些数据进行分组，以便代替当前的查询输出，而不是：

Name                       Number
Nice guy                   1
Nice guy                   2
Nice guy                   4
Nice guy                   5
Nice guy                   6
Nice guy                   7
Nice guy                   8
Nice guy                   9
Nice guy                   10
Nice guy                   11
Nice guy                   12
Frank                      3
Frank                      4

我会得到这个：

Name       Number
Nice guy   1,2,4,...
Frank      3,4

这是我当前的查询：

select distinct name, number
from patterns,numbers,people
where patterns.index=numbers.index
AND patterns.id=people.id
order by name, charge;

我试过的是这个，但它失败了：

select distinct name, number
from patterns,numbers,people
where patterns.index=numbers.index
AND patterns.id=people.id
group by name
order by name, number;

非常感谢任何帮助！

Answer 1

更新：以这种方式尝试

SELECT name, WM_CONCAT(number) number
  FROM
(
  SELECT DISTINCT name, number 
    FROM patterns t JOIN numbers n
      ON t.index = n.index JOIN people p
      ON t.id = p.id
) q
 GROUP BY name
 ORDER BY name

按表分组，列出每个属性的所有一个属性

1 个答案: