标签：des style blog color ar 数据 art div sp
假设有表ARTICLE,字段ID、YEAR...(其他省略)，数据53210条(客户真实数据，量不大)，分页查询每页30条，查询第1500页（即第45001-45030条数据），字段ID聚集索引，YEAR无索引，Sqlserver版本：2008R2
第一种方案、最简单、普通的方法：
SELECT TOP 30 * FROM [ARTICLE] WHERE ID NOT IN ( SELECT TOP 45000 ID FROM [ARTICLE] ORDER BY YEAR DESC ,ID DESC ) ORDER BY YEAR DESC ,ID DESC
第二种方案：
SELECT * FROM( SELECT TOP 30 * FROM ( SELECT TOP 45030 * FROM ARTICLE ORDER BY YEAR DESC ,ID DESC ) f ORDER BY f.YEAR ASC ,f.ID DESC ) s ORDER BY s.YEAR DESC ,s.ID DESC
第三种方案：
SELECT * FROM ARTICLE w1 ,( SELECT TOP 30 ID FROM ( SELECT TOP 50030 ID ,YEAR FROM ARTICLE ORDER BY YEAR DESC ,ID DESC ) w ORDER BY w.YEAR ASC ,w.ID ASC ) w2 WHERE w1.ID = w2.ID ORDER BY w1.YEAR DESC ,w1.ID DESC
第四种方案：
SELECT * FROM ARTICLE w1 WHERE ID IN ( SELECT TOP 30 ID FROM ( SELECT TOP 45030 ID ,YEAR FROM ARTICLE ORDER BY YEAR DESC ,ID DESC ) w ORDER BY w.YEAR ASC ,w.ID ASC ) ORDER BY w1.YEAR DESC ,w1.ID DESC
第五种方案：
SELECT w2.n ,w1.* FROM ( SELECT TOP 50030 Row_number() OVER (ORDER BY YEAR DESC, ID DESC) n ,ID FROM ARTICLE ) w2 ,ARTICLE w1 WHERE w1.ID = w2.ID AND w2.n > 50000 ORDER BY w2.n ASC
在查询页数靠前时，效率3>4>5>2>1，页码靠后时5>4>3>1>2，再根据用户习惯，一般用户的检索只看最前面几页，因此选择3 4 5方案均可，若综合考虑方案5是最好的选择
标签：des style blog color ar 数据 art div sp
原文地址：http://www.cnblogs.com/xachary/p/3968580.html
