分页语句:

Oracle:

--这种分页查询方式不仅仅是针对单表的简单查询，对于最内层查询是复杂的

--多表联合查询或最内层查询包含排序的情况一样有效

SELECT * FROM (

SELECT ROWNUM RN , T.* FROM

(SELECT * FROM FTNEMR.PATIENT_VISIT) T WHERE ROWNUM <= 40 )

WHERE RN >= 21

ORDER BY PATIENT_ID;

--这种方式比上面的方式要性能要低很多

SELECT * FROM (

SELECT ROWNUM RN, T.* FROM

(SELECT * FROM FTNEMR.PATIENT_VISIT) T )

WHERE RN BETWEEN 21 AND 40

ORDER BY PATIENT_ID

SQL Server:

--查询出第21条至第30条数据 --

SELECT TOP 10 * FROM dbo.HIS_BA1

WHERE FID NOT IN(SELECT TOP 20 FID FROM dbo.HIS_BA1 ORDER BY FID)

Mysql:

SELECT * FROM table LIMIT 5,10; // 检索记录行 6-15