sql分页查询

create table student(

id number(5) not null,

name varchar(10),

constraint student_key primary key(id)

)

insert into student(id,name) values(1111,'xiao1');

insert into student(id,name) values(1112,'xiao2');

insert into student(id,name) values(1113,'xiao3');

insert into student(id,name) values(1114,'xiao4');

insert into student(id,name) values(1115,'xiao5');

DB2、Oracle

select * from 

(select id,(row_number() over(order by id)) as num,t.* from student t) ss
where ss.num < 4 and ss.num > 1;

此外Oracle还可以用rownum查询行号，用法与row_number()相似

select rownum from students order by id;

DB2可以用fetch first查询前n行：
select * from student fetch first 10 row only;

Mysql可以用limit：

select * from student order by id limit 1,4;

SQL Server里面有top关键字

select top 10 * from student;