5.mysql 基础之排序和分页
2022/3/19 19:30:14
本文主要是介绍5.mysql 基础之排序和分页,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!
数据准备:创建表
create table emploees
(
id int,
name varchar(20),
gender varchar(100),
saraly double(10,2),
department_id int,
manger_man varchar(10)
)
数据准备 :插入数据
insert into emploees values(101,'tom','m',5000,20,'zhangsan');
insert into emploees values(102,'tom1','m',6000,30,'zhangsan');
insert into emploees values(103,'tom2','m',7000,40,'zhangsan');
insert into emploees values(104,'tom3','m',8000,50,'zhangsan');
insert into emploees values(105,'tom4','m',9000,60,'zhangsan');
insert into emploees values(106,'tom5','m',10000,70,'zhangsan');
insert into emploees values(107,'kate1','f',5000,20,'lisi');
insert into emploees values(108,'kate2','f',6000,30,'lisi');
insert into emploees values(109,'kate3','f',7000,40,'lisi');
insert into emploees values(107,'kate4','f',8000,50,'lisi');
insert into emploees values(107,'kate5','f',9000,60,'lisi');
insert into emploees values(107,'kate6','f',9000,60,null);
排序
按id 降序排序
select * from emploees order by id desc
按id 升序排序,asc可以省略
select * from emploees order by id asc
按id 降序排序,saraly 升序
select * from emploees order by id desc,saraly asc
按id 降序排序,saraly 降序
select * from emploees order by id desc,saraly desc
分页
按id 降序排序,然后分页显示,limit后面0为偏移量,3 为显示的条数,第一页显示3条
select * from emploees
order by id desc
limit 0,3
按id 降序排序,然后分页显示第二页显示5条
select * from emploees
order by id desc
limit 1,5
8.0版本新特性 offset ,5代表显示条数,1为偏移量
select * from emploees
order by id desc
limit 5 offset 1
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