mysql8基础 drop table 删除一个表或者多个表

•        OS : Ubuntu 18.04.1 LTS
•        DBMS : mysql 8.0.12
•        blog : blog.csdn.net/shiwanwu
•  typesetting : Markdown

 

数据，数据，命根就在数据 ! 操作数据库时，一定要谨慎小心。师万物 的代码看看就好，要有自己的判断。遇到抉择，要不耻上下问。

 

example - 删除一个表

stu@Ubuntu:~$ mysql -u root -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 81
Server version: 8.0.12 MySQL Community Server - GPL

Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.

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 databases;
+--------------------+
| Database           |
+--------------------+
| db_herbal_medicine |
| employees          |
| information_schema |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
6 rows in set (0.00 sec)

mysql> use db_herbal_medicine;
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_db_herbal_medicine |
+------------------------------+
| t_cereal                     |
| t_soil                       |
| t_water                      |
+------------------------------+
3 rows in set (0.00 sec)

mysql> drop table t_cereal;
Query OK, 0 rows affected (0.07 sec)

mysql> show tables;
+------------------------------+
| Tables_in_db_herbal_medicine |
+------------------------------+
| t_soil                       |
| t_water                      |
+------------------------------+
2 rows in set (0.00 sec)

mysql> exit
Bye
stu@Ubuntu:~$ 

 

example - 删除多个表

stu@Ubuntu:~$ mysql -u root -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 82
Server version: 8.0.12 MySQL Community Server - GPL

Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.

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 databases;
+--------------------+
| Database           |
+--------------------+
| db_herbal_medicine |
| employees          |
| information_schema |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
6 rows in set (0.00 sec)

mysql> use db_herbal_medicine;
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_db_herbal_medicine |
+------------------------------+
| t_soil                       |
| t_water                      |
+------------------------------+
2 rows in set (0.00 sec)

mysql> drop table t_soil,t_water;
Query OK, 0 rows affected (0.06 sec)

mysql> show tables;
Empty set (0.00 sec)

mysql> exit
Bye
stu@Ubuntu:~$ 

 

resource

• [手册] dev.mysql.com/doc
• [源码] downloads.mysql.com/archives/community
• [Bug ] bugs.mysql.com
• [ 测试数据 ] github.com/datacharmer/test_db
• [规范 - 参考] yq.aliyun.com/articles/69327
• [排名 - 参考] db-engines.com/en
• [平台] www.csdn.net

 

---

MySQL是关系型数据库管理系统，目前是开源的(2019-02)。
明确权限，恰当地选择引擎与字符集等，规范命名。
MariaDB，Redis，MongoDB，PostgreSQL，Hive，HBase等，多作了解，拓宽心量。
Workbench，phpMyAdmin，Navicat等图形化管理工具，豫兮若冬涉川。