MySQL提示符
\D 日期
\h 主机名
\u 用户名
\d 当前数据库名称规范：
关键字函数名大写
数据库名，表名，字段名小写
MySQL语句一般以分号结尾版本号 -V(–version)
C:\Users\Administrator>mysql -V
mysql Ver 14.14 Distrib 5.7.22, for Win64 (x86_64)登陆 -u(–user=name) -p(–password[=name]) -P(-port=#) -h(host=name)
C:\Users\Administrator>mysql -u root -p -P3306 -h127.0.0.1
Enter password: ****
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 5
Server version: 5.7.22 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.退出\q(exit或quit)
mysql> \q
Bye自定义提示符（此处为toly>） –prompt
C:\Users\Administrator>mysql -uroot -ptoly --prompt toly
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 9
Server version: 5.7.22 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.
toly>
也可登陆后修改
mysql> prompt toly>
PROMPT set to 'toly>'
toly>当前版本号、日期、时间、用户
mysql> SELECT VERSION(), CURRENT_DATE,NOW(),USER();
+-----------+--------------+---------------------+----------------+
| VERSION() | CURRENT_DATE | NOW() | USER() |
+-----------+--------------+---------------------+----------------+
| 5.7.22 | 2018-05-10 | 2018-05-10 12:30:26 | root@localhost |
+-----------+--------------+---------------------+----------------+
1 row in set (0.00 sec)简单计算
mysql> SELECT 1+1, (4+1)*5;
+-----+---------+
| 1+1 | (4+1)*5 |
+-----+---------+
| 2 | 25 |
+-----+---------+
1 row in set (0.00 sec)展示数据库
mysql> SHOW DATABASES;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
+--------------------+
4 rows in set (0.00 sec)
