Oracle分页语句

SELECT * 

FROM 

    (SELECT A.*, ROWNUM RN 

     FROM 

         (SELECT * 

          FROM tb_news 

          where isload=0 

          order by isload desc) A 

     WHERE ROWNUM < 15) 

WHERE RN >=10; 
有Order by 的查询,采用这种写法效率会比较高。
无Order by 的查询,可以讲rownum写在一起效率比较高
SELECT A.*, ROWNUM RN 
     FROM 
         (SELECT * 
          FROM tb_news 
          where isload=0 
           order by isload desc
          ) A 
     WHERE ROWNUM < 15 AND ROWNUM>10;

 

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