php - 选择名称相似的行

Question

所以我有一个像这样的 tbl_total。

Name   | Total  |  Month
=========================
David  | 87     | Jan
Mike   | 67     | Jan
David  | 90     | Feb
Mike   | 100    | Feb

我想这样显示。请有人告诉我该怎么做，因为我完全不知道如何在 PHP 中显示这样的内容。

Name   | Jan | Feb
===================
David  | 87  | 90
Mike   | 67  | 100

Answer 1

select name,
       sum(case when month = 'Jan' then total else 0 end) as Jan,
       sum(case when month = 'Feb' then total else 0 end) as Feb,
       sum(case when month = 'Mar' then total else 0 end) as Mar,
       sum(case when month = 'Apr' then total else 0 end) as Apr,
       sum(case when month = 'May' then total else 0 end) as May,
       sum(case when month = 'Jun' then total else 0 end) as Jun,
       sum(case when month = 'Jul' then total else 0 end) as Jul,
       sum(case when month = 'Aug' then total else 0 end) as Aug,
       sum(case when month = 'Sep' then total else 0 end) as Sep,
       sum(case when month = 'Oct' then total else 0 end) as Oct,
       sum(case when month = 'Nov' then total else 0 end) as Nov,
       sum(case when month = 'Dec' then total else 0 end) as `Dec`
from your_table
group by name