mysql：创建新库，新表，查看character

创建新库create database wenda;

创建新表drop table if exists `user`;
create table `user`(
`id` int(11) unsigned not null auto_increment,
`name` varchar(64)not null default '',
`password` varchar(128) not null default '',
`salt` varchar(32) not null default '',
`head_url` varchar(256) not null default '',
primary key(`id`),
unique key name(`name`)
)engine=innodb default charset=utf8;

pk：primary key 主键

NN: NOT NULL是否可以为空

uq：unique 是否可以重复

ai：auto-incremental 自增

查看编码格式

show variables like 'character%';

character_set_client	utf8
character_set_connection	utf8
character_set_database	utf8
character_set_filesystem	binary
character_set_results	utf8
character_set_server	latin1
character_set_system	utf8
character_sets_dir	C:Program FilesMySQLMySQL Server 5.7sharecharsets

修改编码格式

set character_set_database=utf8;