MySQL

本文主要是介绍MySQL，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！

D:\SoftWare\MySQL\MySQL Server 5.7\bin>mysql -uroot -p
Enter password: ******
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 4
Server version: 5.7.35-log 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> status
--------------
mysql  Ver 14.14 Distrib 5.7.35, for Win64 (x86_64)

Connection id:          4
Current database:
Current user:           root@localhost
SSL:                    Cipher in use is ECDHE-RSA-AES128-GCM-SHA256
Using delimiter:        ;
Server version:         5.7.35-log MySQL Community Server (GPL)
Protocol version:       10
Connection:             localhost via TCP/IP
Server characterset:    utf8
Db     characterset:    utf8
Client characterset:    utf8
Conn.  characterset:    utf8
TCP port:               3306
Uptime:                 13 min 31 sec

Threads: 2  Questions: 10  Slow queries: 0  Opens: 108  Flush tables: 1  Open tables: 101  Queries per second avg:


mysqlmysql> show databases;   /*所有的数据库db查询，要以分号结尾*/
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| school             |
| sys                |
+--------------------+

mysql> use school
Database changed
mysql> SELECT * FROM v_student LIMIT 0, 1000;
+----+-------+-----+
| id | name  | age |
+----+-------+-----+
|  1 | Bob   |  18 |
|  3 | Jerry |  17 |
+----+-------+-----+
2 rows in set (0.13 sec)

mysql> describe student
    -> ;
+-------+--------------+------+-----+---------+----------------+
| Field | Type         | Null | Key | Default | Extra          |
+-------+--------------+------+-----+---------+----------------+
| id    | int(10)      | NO   | PRI | NULL    | auto_increment |
| name  | varchar(100) | NO   |     | NULL    |                |
| age   | int(3)       | NO   |     | NULL    |                |
+-------+--------------+------+-----+---------+----------------+
3 rows in set (0.00 sec)

mysql> create database db_bob
    -> ;
Query OK, 1 row affected (0.00 sec)

mysql> show databases
    -> ;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| db_bob             |
| mysql              |
| performance_schema |
| school             |
| sys                |
+--------------------+
6 rows in set (0.00 sec)

mysql>  exit;
Bye

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