Question

在postgresql中您需要做的就是输入postgres <database_name> 访问数据库。在MySql中，您需要这样做：

mysql -u root
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 52
Server version: 5.7.20 Homebrew

Copyright (c) 2000, 2017, 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> use arthouse_development
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> select * from catalog_items;
Empty set (0.00 sec)

mysql> select * from catalog_items
    -> ;
Empty set (0.00 sec)

mysql> select * from users;
Empty set (0.01 sec)

mysql> select * from users
    -> ;
Empty set (0.00 sec)

有没有办法不必指定用户名并在一行中指定数据库？

如何在数据库中看到mysql中的所有表？

Answer 1

使用mysql程序的-D选项默认登录数据库 -p选项让你在mysql程序中输入密码

C:\Program Files\MySQL\MySQL Server 5.7\bin>mysql -u root -p -D stackoverflow
Enter password: **
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 10
Server version: 5.7.20-log MySQL Community Server (GPL)

Copyright (c) 2000, 2017, 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.

确认我们正在使用数据库stackoverflow。

mysql> select database();
+---------------+
| database()    |
+---------------+
| stackoverflow |
+---------------+
1 row in set (0.00 sec)

如何在数据库中看到mysql中的所有表？

mysql> show tables;
+-------------------------+
| Tables_in_stackoverflow |
+-------------------------+
| baskets                 |
| baskets_fruits          |
| conditions              |
| employee                |
| employees               |
| hugetable               |
| kanji                   |
| newtable                |
| result                  |
| t1                      |
| t2                      |
| table1                  |
| table_test              |
| temp                    |
| test                    |
| testing                 |
| word                    |
+-------------------------+
17 rows in set (0.00 sec)

或者使用information_schema.TABLES表

mysql> SELECT TABLE_NAME FROM information_schema.TABLES WHERE TABLE_SCHEMA = 'stackoverflow';
+----------------+
| TABLE_NAME     |
+----------------+
| baskets        |
| baskets_fruits |
| conditions     |
| employee       |
| employees      |
| hugetable      |
| kanji          |
| newtable       |
| result         |
| t1             |
| t2             |
| table1         |
| table_test     |
| temp           |
| test           |
| testing        |
| word           |
+----------------+
17 rows in set (0.00 sec)

Answer 2

使用man mysql查看mysql联机帮助页，您将找到-D标记：

   ·   --database=db_name, -D db_name

       The database to use. This is useful primarily in an option file.

Answer 3

其他答案提及--database / -D选项，但您甚至不需要。

https://dev.mysql.com/doc/refman/5.7/en/mysql.html显示了更简单的示例：

使用mysql非常简单。从命令提示符调用它翻译如下：
shell> mysql db_name

换句话说，与您为postgres <database_name> 显示的用法完全一样。

您可能还需要提供用户名和密码来验证MySQL实例，但我更喜欢将它们放入选项文件中，因此我不必重复输入它们。

$ cat ~/.my.cnf

[client]
username = scott
password = tiger

有关这些文件的详情，请参阅https://dev.mysql.com/doc/refman/5.7/en/option-files.html。

还有一种可选的方法来存储加密的用户凭据。对于此https://dev.mysql.com/doc/refman/5.7/en/mysql-config-editor.html

如果您尝试阅读一些文档，任何软件都更容易使用！： - ）

更容易访问mysql数据库表？

3 个答案: