通过ENUM集合PHP

Question

我有一些sql表格表

    >>>extractDups(names)
    ['John', 'Mike'] 

我想用GROUP by（Instructor，PlanePilot）将所有内容排序到PHP数组

我的结果我想得到一些像以下的php数组：

+----+------+--------+------------+------------+
| 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          |
+----+------+--------+------------+------------+

如果没有3个选择查询，如何：

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

我想用1个查询做它并将其转换为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;