如何在创建 MySQL 视图时使用逻辑运算符组合?
mysqlmysqli database
可以使用 AND、OR 和 NOT 等逻辑运算符组合来创建 MySQL 视图。可以借助以下示例进行说明 −
示例
mysql> Create or Replace View Info AS select ID, Name, Address , Subject FROM Student_info WHERE (Subject = 'Computers' AND ADDRESS = 'Delhi') OR (Subject = 'History' AND Address = 'Amritsar'); Query OK, 0 rows affected (0.11 sec) mysql> Select * from Info; +------+-------+---------+-----------+ | ID | Name | Address | Subject | +------+-------+---------+-----------+ | 133 | Mohan | Delhi | Computers | +------+-------+---------+-----------+ 1 row in set (0.00 sec)
