假设TABLE名为t，PRIMARY KEY为id，则：
1-5000000
SELECT t.*
FROM t , (SELECT id, ROW_NUMBER() OVER( ORDER BY id ) AS num FROM t) as t1
WHERE t.id = t1.id AND t1.num <50000001
50000001 - 100000000
SELECT t.*
FROM t , (SELECT id, ROW_NUMBER() OVER( ORDER BY id ) AS num FROM t) as t1
WHERE t.id = t1.id AND t1.num BETWEEN 50000001 AND 100000000
以此类推...
到于ORACLE，由于伪列rownum总是从1开始计数，所以当rownum 取>1的值时无效，如select * from xxx where rownum = 2，得不到结果。
可使用子查询的方式：select c.* from (select *, rownum as no from xxx) c where c.no = 2来得到结果。