mysql学习笔记之基础知识

查看数据库

show databases;


创建数据库

create DATABASE 数据库名称

create DATABASE databasetest;

选择数据库

use 数据库名称

use databasetest;
------------
Database changed;切换成功

查看当前数据库名称

SELECT DATABASE();

删除数据库

drop DATABASE 数据库名称

drop DATABASE databasetest;

数据库状态

?

status;--------------mysql Ver 14.14 Distrib 5.7.17, for Win64 (x86_64)Connection id:     5Current database:Current user:      root@localhostSSL:          Not in useUsing delimiter:    ;Server version:     5.7.17-log MySQL Community Server (GPL)Protocol version:    10Connection:       127.0.0.1 via TCP/IPServer characterset:  utf8Db   characterset:  utf8Client characterset:  gbkConn. characterset:  gbkTCP port:        3306Uptime:         2 hours 25 min 34 secThreads: 2 Questions: 57 Slow queries: 0 Opens: 114 Flush tables: 1 Open tables: 107 Queries per second avg: 0.006--------------