Question

第一个问题是如此严厉:)

我需要按特定部门类型或部门排序，然后按等级排序。默认设置按Rank，Dept_Type和Department排序。前端是PHP，但如果可能的话，我正在寻找更多的SQL修复程序。如果子查询可以工作，我也有一个部门的源表。

Orgin表：

+-----------+------------+------+
| Dept_Type | Department | Rank |
+-----------+------------+------+
| Inbound   | Dept R     |   1  |
| Outbound  | Dept P     |   2  |
| Inbound   | Dept E     |   3  |
| Outbound  | Dept D     |   4  |
| Outbound  | Dept D     |   5  |
| Outbound  | Dept D     |   6  |
+-----------+------------+------+

我需要通过“Dept D”，“Dept E”来指定订购，然后其他一切如此：

SELECT * 
FROM table 
ORDER BY FIELD(department, "Dept D", "Dept E"), Rank, Dept_Type, Department

我希望它返回（DDDERP）：

+-----------+------------+------+
| Dept_Type | Department | Rank |
+-----------+------------+------+
| Outbound  | Dept D     |   4  |
| Outbound  | Dept D     |   5  |
| Outbound  | Dept D     |   6  |
| Inbound   | Dept E     |   3  |
| Inbound   | Dept R     |   1  |
| Outbound  | Dept P     |   2  |
+-----------+------------+------+

实际返回的内容（RPDDDE）：

+-----------+------------+------+
| Dept_Type | Department | Rank |
+-----------+------------+------+
| Inbound   | Dept R     |   1  |
| Outbound  | Dept P     |   2  |
| Outbound  | Dept D     |   4  |
| Outbound  | Dept D     |   5  |
| Outbound  | Dept D     |   6  |
| Inbound   | Dept E     |   3  |
+-----------+------------+------+

所以理论上我想：

ORDER BY FIELD("Dept D", "Dept E", department), Rank

但显然这种方式不起作用。感谢您花时间看一下。

Answer 1

使用DESC属性：

ORDER BY FIELD(department, 'Dept E', 'Dept D') DESC, Rank, Dept_Type, Department

MySQL：按特定字段排序

1 个答案: