oralce分页－查询21到40条的数据

--Oracle方法1
SELECT * FROM
(
SELECT A.*, ROWNUM RN FROM (SELECT * FROM ss_custinfo) A
WHERE ROWNUM <= 40
)
WHERE RN >= 21;

--Oracle方法2
SELECT * FROM
(
select ss.*, rownum rn from ss_custinfo ss
)
WHERE rn <= 40 and rn>= 21;
 

--Oracle方法3
SELECT * FROM
(
SELECT A.*, ROWNUM RN
FROM (SELECT * FROM ss_custinfo) A
)
WHERE RN BETWEEN 21 AND 40;

--sybase
select * from
(
select ss.*, row_number() over (order by cust_id desc ) as rn
from ss_custinfo ss
) temp
where temp.rn<=40 and temp.rn>=21;

select * from
(
SELECT ss.*, row_number() OVER (partition by cust_id ORDER BY salary desc) rn
FROM ss_custinfo ss
) temp
where temp.rn<=40 and temp.rn>=21;