MySQL 如何使用ORDER BY子句创建MySQL视图?
我们可以使用MySQL的ORDER BY子句对结果集中的记录进行排序。为了理解带有视图的GROUP BY子句,我们将使用名为“Info”的视图创建基本表“Student_info”,该表具有以下数据 –
mysql> Select * from Student_info;
+------+---------+------------+------------+
| id | Name | Address | Subject |
+------+---------+------------+------------+
| 101 | YashPal | Amritsar | History |
| 105 | Gaurav | Chandigarh | Literature |
| 125 | Raman | Shimla | Computers |
| 130 | Ram | Jhansi | Computers |
| 132 | Shyam | Chandigarh | Economics |
| 133 | Mohan | Delhi | Computers |
+------+---------+------------+------------+
6 rows in set (0.00 sec)
阅读更多:MySQL 教程
语法
Create or Replace View view_name AS Select_statements FROM table ORDER BY expression [ASC|DESC]
例如
mysql> Create or Replace View Info AS select ID, Name, Address , Subject FROM Student_info ORDER BY Name ASC;
Query OK, 0 rows affected (0.11 sec)
mysql> Select * from info;
+------+---------+------------+------------+
| ID | Name | Address | Subject |
+------+---------+------------+------------+
| 105 | Gaurav | Chandigarh | Literature |
| 133 | Mohan | Delhi | Computers |
| 130 | Ram | Jhansi | Computers |
| 125 | Raman | Shimla | Computers |
| 132 | Shyam | Chandigarh | Economics |
| 101 | YashPal | Amritsar | History |
+------+---------+------------+------------+
6 rows in set (0.00 sec)
mysql> Create or Replace View Info AS select ID, Name, Address , Subject FROM Student_info ORDER BY Name DESC;
Query OK, 0 rows affected (0.10 sec)
mysql> Select * from info;
+------+---------+------------+------------+
| ID | Name | Address | Subject |
+------+---------+------------+------------+
| 101 | YashPal | Amritsar | History |
| 132 | Shyam | Chandigarh | Economics |
| 125 | Raman | Shimla | Computers |
| 130 | Ram | Jhansi | Computers |
| 133 | Mohan | Delhi | Computers |
| 105 | Gaurav | Chandigarh | Literature |
+------+---------+------------+------------+
6 rows in set (0.00 sec)