php - GROUP BY ENUM 到数组 PHP

Question

我有一些sql表

+----+------+--------+------------+------------+
| id | code | name   | Instructor | PlanePilot |
+----+------+--------+------------+------------+
|  1 |  001 | sasha  | N          | N          |
|  2 |  002 | sasha2 | Y          | N          |
|  3 |  003 | sasha3 | N          | Y          |
|  4 |  004 | sasha4 | Y          | Y          |
|  5 |  005 | sasha5 | Y          | Y          |
|  6 |  006 | sasha6 | N          | N          |
|  7 |  007 | sasha7 | Y          | N          |
|  8 |  008 | sasha8 | Y          | N          |
+----+------+--------+------------+------------+

我想通过( Instructor ， PlanePilot )将其全部排序到 PHP 数组

我的结果是我想要得到一些 php 数组，例如:

$array =[
withoutInstructorPLANEPilot:[sasha,sasha6],
Instructor:[sasha2,sasha4,sasha5,sasha7,sasha8],
PlanePilot:[sasha3,sasha4,sasha5]
]

如果没有 3 个选择查询，例如:

SELECT * FROM mytable where Instructor= 'Y'

我想用 1 个查询来完成并将其转换为 PHP 数组

Answer 1

这是你想要的吗？

select group_concat( (case when Instructor = 'N' and PlanePilot = 'N' then name end) ) as neither,
       group_concat( (case when Instructor = 'Y' then name end) ) as instructors,
       group_concat( (case when PlanePilot = 'Y' then name end) ) as planepilots
from t;