如何创建 MySQL 视图?
mysqlmysqli database更新于 2023/11/5 20:48:00
要创建 MySQL 视图，请使用 CREATE VIEW，语法如下 −
create view yourViewName as select * from yourTableName;
首先我们创建一个表 −
mysql> create table DemoTable1802 ( StudentId int, StudentName varchar(20) ); Query OK, 0 rows affected (0.00 sec)
使用 insert 命令在表中插入一些记录 −
mysql> insert into DemoTable1802 values(101,'John'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1802 values(102,'Carol'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1802 values(103,'Sam'); Query OK, 1 row affected (0.00 sec)
使用 select 语句显示表中的所有记录 −
mysql> select * from DemoTable1802;
这将产生以下输出 −
+-----------+-------------+ | StudentId | StudentName | +-----------+-------------+ | 101 | John | | 102 | Carol | | 103 | Sam | +-----------+-------------+ 3 rows in set (0.00 sec)
以下是创建视图 − 的查询
mysql> create view view_DemoTable1802 as select * from DemoTable1802; Query OK, 0 rows affected (0.00 sec)秒)
使用 select 语句显示视图中的所有记录 −
mysql> select * from view_DemoTable1802;
这将产生以下输出 −
+-----------+-------------+ | StudentId | StudentName | +-----------+-------------+ | 101 | John | | 102 | Carol | | 103 | Sam | +-----------+-------------+ 3 rows in set (0.00 sec)
