mysql 自定义排序
mysql 自定义排序一、mysql field自定义排序函数的格式
order by field(value,str1,str2,str3,str4,,,,,,strn)
其中value后面的参数自定义，不限制参数个数
含义
将获取出来的数据根据str1,str2,str3,str4等的顺序排序
二、mysql order by field 实例
1、按 id 以 5, 3, 7, 1 的顺序排列
SELECT * FROM `MyTable`
WHERE `id` IN (1, 7, 3, 5)
ORDER BY FIELD(`id`, 5, 3, 7, 1)
2、按 name 以 'Suzi','Ben','Henry' 的顺序排列
mysql> select * from driver_log order by field(name,'Suzi','Ben','Henry');
--结果
+--------+-------+------------+-------+
| rec_id | name | trav_date | miles |
+--------+-------+------------+-------+
| 2 | Suzi | 2006-08-29 | 391 |
| 7 | Suzi | 2006-09-02 | 502 |
| 1 | Ben | 2006-08-30 | 152 |
| 9 | Ben | 2006-09-02 | 79 |
| 5 | Ben | 2006-08-29 | 131 |
| 8 | Henry | 2006-09-01 | 197 |
| 6 | Henry | 2006-08-26 | 115 |
| 4 | Henry | 2006-08-27 | 96 |
| 3 | Henry | 2006-08-29 | 300 |
| 10 | Henry | 2006-08-30 | 203 |
+--------+-------+------------+-------+