MySQL 能否按照MySQL IN(…)语句中的值返回查询结果？

是的，你可以通过 MySQL 的 ORDER BY FIELD() 命令来实现。首先创建一张表 –

mysql> create table DemoTable
   -> (
   -> Number int
   -> );
Query OK, 0 rows affected (0.54 sec)

使用 insert 命令插入一些记录 –

mysql> insert into DemoTable values(19);
Query OK, 1 row affected (0.20 sec)

mysql> insert into DemoTable values(30);
Query OK, 1 row affected (0.20 sec)

mysql> insert into DemoTable values(34);
Query OK, 1 row affected (0.32 sec)

mysql> insert into DemoTable values(28);
Query OK, 1 row affected (0.13 sec)

mysql> insert into DemoTable values(25);
Query OK, 1 row affected (0.12 sec)

mysql> insert into DemoTable values(29);
Query OK, 1 row affected (0.15 sec)

mysql> insert into DemoTable values(24);
Query OK, 1 row affected (0.14 sec)

使用 select 命令显示表中所有记录 –

mysql> select *from DemoTable;

这将产生以下输出 –

+--------+
| Number |
+--------+
|     19 |
|     30 |
|     34 |
|     28 |
|     25 |
|     29 |
|     24 |
+--------+
7 rows in set (0.00 sec)

以下是查询以相同顺序返回结果的语句 –

mysql> select *from DemoTable
   -> ORDER BY FIELD(Number, 30,19,34,25,28,29,24) ;

这将输出以下结果，按照设置的值以相同顺序显示结果 –

+--------+
| Number |
+--------+
|     30 |
|     19 |
|     34 |
|     25 |
|     28 |
|     29 |
|     24 |
+--------+
7 rows in set (0.00 sec)

阅读更多：MySQL 教程