如何在MySQL中创建视图？

要在MySQL中创建视图，可以使用CREATE VIEW命令。语法如下-

CREATE VIEW yourViewName as SELECT yourColumName1, yourColumName2, yourColumName3,...... yourColumNameN from yourTableName;

为了理解上述语法，让我们首先创建一个表。以下是创建表的查询-

create table ViewDemo
   −> (
   −> Id int,
   −> Name varchar(200),
   −> Age int
   −> );

实现以上语法以创建视图。以下是在MySQL中创建视图的查询-

create view LookUpTable as select Id,Name from ViewDemo;

现在检查是否已使用show命令创建视图。查询如下-

show create table LookUpTable;

以下是输出-

+-------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------------------+
| View        | Create View                                                                                                                                                         | character_set_client | collation_connection |
+-------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------------------+
| lookuptable | CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`%` SQL SECURITY DEFINER VIEW `lookuptable` AS select `viewdemo`.`Id` AS `Id`,`viewdemo`.`Name` AS `Name` from `viewdemo` | utf8 | utf8_general_ci |
+-------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------------------+
1 row in set (0.00 sec)