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create table ex_table_A select * from table_A;
ex_table_A 是新创建的表的表名
- [root@localhost ~]# mysql -uroot -p
- Enter password:
- Welcome to the MySQL monitor. Commands end with ; or \g.
- Your MySQL connection id is 2
- Server version: 5.7.35 MySQL Community Server (GPL)
-
- Copyright (c) 2000, 2021, Oracle and/or its affiliates.
-
- Oracle is a registered trademark of Oracle Corporation and/or its
- affiliates. Other names may be trademarks of their respective
- owners.
-
- Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
-
- mysql> show database;
- ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'database' at line 1
- mysql> show databases;
- +--------------------+
- | Database |
- +--------------------+
- | information_schema |
- | chen |
- | mysql |
- | performance_schema |
- | sys |
- +--------------------+
- 5 rows in set (0.10 sec)
-
- mysql> use chen;
- Reading table information for completion of table and column names
- You can turn off this feature to get a quicker startup with -A
-
- Database changed
- mysql> show tables;
- +----------------+
- | Tables_in_chen |
- +----------------+
- | stu |
- | stu_1 |
- | t_emp |
- +----------------+
- 3 rows in set (0.00 sec)
-
- mysql> select * from stu
- -> ;
- +----+------+
- | id | name |
- +----+------+
- | 1 | NULL |
- | 2 | lisi |
- | 3 | NULL |
- +----+------+
- 3 rows in set (0.03 sec)
-
- mysql> create table ex_stu select *from stu;
- Query OK, 3 rows affected (0.22 sec)
- Records: 3 Duplicates: 0 Warnings: 0
-
- mysql> show tables;
- +----------------+
- | Tables_in_chen |
- +----------------+
- | ex_stu |
- | stu |
- | stu_1 |
- | t_emp |
- +----------------+
- 4 rows in set (0.00 sec)
-
- mysql> select * from ex_stu;
- +----+------+
- | id | name |
- +----+------+
- | 1 | NULL |
- | 2 | lisi |
- | 3 | NULL |
- +----+------+
- 3 rows in set (0.00 sec)
-
- mysql>
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