MySQL 如何查看视图是由什么构成的

以下是语法 –

show create view yourViewName;

首先，让我们创建一张表 –

mysql> create table DemoTable
-> (
-> StudentName varchar(20)
-> );
Query OK, 0 rows affected (0.56 sec)

使用插入命令将一些记录插入表中 –

mysql> insert into DemoTable values('Chris');
Query OK, 1 row affected (0.14 sec)

mysql> insert into DemoTable values('Robert');
Query OK, 1 row affected (0.18 sec)

mysql> insert into DemoTable values('David');
Query OK, 1 row affected (0.13 sec)

使用select语句从表中显示所有记录 –

mysql> select *from DemoTable;

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输出

这将产生以下输出 –

+-------------+
| StudentName |
+-------------+
| Chris       |
| Robert      |
| David       |
+-------------+
3 rows in set (0.00 sec)

以下是为表创建视图的查询 –

mysql> CREATE VIEW view_DemoTable AS SELECT StudentName from DemoTable;
Query OK, 0 rows affected (0.12 sec)

以下是查看MySQL视图构成的查询 –

mysql> show create view view_DemoTable;

输出

这将产生以下输出 –

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

让我们检查视图记录 –

mysql> select *from view_DemoTable;

输出

这将产生以下输出 –

+-------------+
| StudentName |
+-------------+
| Chris       |
| Robert      |
| David       |
+-------------+
3 rows in set (0.05 sec)