mysql 基础

创建数据库     

create database fss;

查询数据库     

show databases;

删除数据库     

drop database fss;

创建表           

create table `fss`( `id` int unsigned auto_increment comment '序号', `title` varchar(20) not null comment '标题', `content` varchar(80) comment '内容', primary key (`id`))engine = InnoDB default charset = utf8; 

create table `fss2`( `id` int unsigned auto_increment comment '序号', `title` varchar(20) not null comment '标题', `content` varchar(80) comment '内容', primary key (`id`))engine = InnoDB default charset = utf8; 

create table `detail`(`cid` int unsigned auto_increment comment 'cid', `title` varchar(20) not null comment '标题', `press` varchar(20) not null comment '出版社', `date` varchar(20) not null comment '时间', primary key (`cid`))engine = InnoDB default charset = utf8;

查询表           

show tables;

删除表           

drop table fss;

插入数据       

insert into fss(title, content) values('fate', 'fate grand order');       

insert into fss(title,content) values('fate','fate stay night');     

insert into fss(title,content) values('one piece','3D2Y');  

 

insert into fss2(title, content) values('fate','fate zero');

 

insert into detail(title,press,date) values('one piece','jump','1997');

insert into detail(title,press,date) values('fate','type moon','2000');

修改数据       

update fss set content = 'fate stay night' where id = '1';

删除数据       

delete from fss where id = '1';

基础查询       

select * from fss;

where查询     

select * from fss where title = 'fata';

模糊查询(like查询)       

select * from fss where title like 'fa%';

分组查询(group查询)     

select * from fss group by title;

select * from fss a, detail b where a.title = b.title group by b.press;

排序查询(order查询)     

select * from fss order by id desc;

union查询       

select title from fss union select title from fss2; 

多表查询         

select * from fss a , detail b where a.title = b.title;

修改表中数据

update fss set content  = 'FGO' where id = '1';

删除表中数据

delete from fss where id = '1';

修改字段

alter table fss change title title char(20) not null comment 'title';

删除字段

alter table fss drop title;

添加字段

alter table fss add title char(20) not null comment 'title';

修改表名

alter table fss2 rename fes;

创建索引

alter table fss add index title_Index (title);

alter table fss add index content_Index (conten);

删除索引

drop index content_Index on fss;

查看表中索引

show index from fss;

查看表的结构

desc fss;

事物操作

begin  开启事物

commit  提交事物

backroll 回滚

savepoint  identifier 设置储存点

release savepoint identifier  删除一个储存点

backroll identifier 回滚到储存点

 

 

.....(未完)