MySQL库的基础操作入门案例详解

mysql> create database [if not exists] 库的名字 [CHARACTER SET] [COLLATE]

 create database db1;

create database db2 charset=utf8;

 create database db3 charset=utf8 collate utf8_general_ci;
 create database db3 charset=utf8 collate=utf8_general_ci;  =可以加可以不加

show variables like 'character_set_database';

show variables like 'collation_database';

show charset;

show collation;

create database test1 collate utf8_general_ci;

use test1
create table person(name varchar(20));

insert into person values('a');
insert into person values('A');
insert into person values('b');
insert into person values('B');

create database test2 collate utf8_bin;

use test2
create table person(name varchar(20));

insert into person values('a');
insert into person values('A');
insert into person values('b');
insert into person values('B');

mysql> use test1;
mysql> select * from person where name='a';

show databases;

select database();

show create database 数据库名；

mysql> show create database test2;

alter database 库名称 库属性（比如：charset=utf8） ;

drop database [if exists] 库名称;

#mysqldump -P3306 -u root -p 密码 -B 数据库名 > 数据库备份存储的文件路径

root@iZ2vcb2izu72dt7ghpv46fZ:~/Lwork/MySQL# mysqldump -P3306 -u root -p -B db2> ./file

mysql> source /root/Lwork/MySQL/file

#mysqldump -u root -p 数据库名 表名1 表名2 > D:/mytest.sql

#mysqldump -u root -p -B 数据库名1 数据库名2 ... > 数据库存放路径

show processlist