Sử dụng hàm FIELD() kết hợp DESC. Tạo bảng:
mysql> create table DemoTable -> ( -> Number int -> ); Query OK, 0 rows affected (0.57 sec)
Chèn dữ liệu:
mysql> insert into DemoTable values(10); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values(20); Query OK, 1 row affected (0.27 sec) mysql> insert into DemoTable values(30); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values(40); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values(50); Query OK, 1 row affected (0.15 sec)
Hiển thị dữ liệu:
mysql> select *from DemoTable;
Kết quả
+--------+ | Number | +--------+ | 10 | | 20 | | 30 | | 40 | | 50 | +--------+ 5 rows in set (0.00 sec)
Truy vấn sắp xếp theo thứ tự (40,50,20,30,10) giảm dần:
mysql> select *from DemoTable where Number IN (40,50,20,30,10) ORDER BY FIELD(Number, 40,50,20,30,10) DESC;
Kết quả
+--------+ | Number | +--------+ | 10 | | 30 | | 20 | | 50 | | 40 | +--------+ 5 rows in set (0.03 sec)