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高效的SQLSERVER分页查询(推荐)

Sqlserver数据库分页查询一直是Sqlserver的短板,闲来无事,想出几种方法,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  

 

 

     平均查询100次所需时间:45s

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  

 

     平均查询100次所需时间:138S

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

     平均查询100次所需时间:21S

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

     平均查询100次所需时间:20S

第五种方案:


SELECT w2.n, w1.* FROM ARTICLE w1, (  SELECT TOP 50030 row_number() OVER (ORDER BY YEAR DESC, ID DESC) n, ID FROM ARTICLE ) w2 WHERE w1.ID = w2.ID AND w2.n > 50000 ORDER BY w2.n ASC  

     平均查询100次所需时间:15S

查询第1000-1030条记录

第一种方案:


SELECT TOP 30 * FROM ARTICLE WHERE ID NOT IN(SELECT TOP 1000 ID FROM ARTICLE ORDER BY YEAR DESC, ID DESC) ORDER BY YEAR DESC,ID DESC  

 

     平均查询100次所需时间:80s

第二种方案:


SELECT * FROM  (   SELECT TOP 30 * FROM (SELECT TOP 1030 * 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  

   平均查询100次所需时间:30S

第三种方案:


SELECT * FROM ARTICLE w1, (    SELECT TOP 30 ID FROM     (        SELECT TOP 1030 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

     平均查询100次所需时间:12S

第四种方案:


SELECT * FROM ARTICLE w1     WHERE ID in         (            SELECT top 30 ID FROM             (                SELECT top 1030 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

     平均查询100次所需时间:13S

第五种方案:


SELECT w2.n, w1.* FROM ARTICLE w1,(   SELECT TOP 1030 row_number() OVER (ORDER BY YEAR DESC, ID DESC) n, ID FROM ARTICLE) w2 WHERE w1.ID = w2.ID AND w2.n > 1000 ORDER BY w2.n ASC  

平均查询100次所需时间:14S

     由此可见在查询页数靠前时,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,但是要注意SQL2000不支持row_number()函数,由于时间和条件的限制没有做更深入、范围更广的测试,有兴趣的可以仔细研究下。

以下是根据第四种方案编写的一个分页存储过程:


if exists (select * from dbo.sysobjects where id = object_id(N[dbo].[sys_Page_v2]) and OBJECTPROPERTY(id, NIsProcedure) = 1)drop procedure [dbo].[sys_Page_v2]GO CREATE PROCEDURE [dbo].[sys_Page_v2]@PCount int output,    --总页数输出@RCount int output,    --总记录数输出@sys_Table nvarchar(100),    --查询表名@sys_Key varchar(50),        --主键@sys_Fields nvarchar(500),    --查询字段@sys_Where nvarchar(3000),    --查询条件@sys_Order nvarchar(100),    --排序字段@sys_Begin int,        --开始位置@sys_PageIndex int,        --当前页数@sys_PageSize int        --页大小ASSET NOCOUNT ONSET ANSI_WARNINGS ONIF @sys_PageSize < 0 OR @sys_PageIndex < 0BEGIN        RETURNENDDECLARE @new_where1 NVARCHAR(3000)DECLARE @new_order1 NVARCHAR(100)DECLARE @new_order2 NVARCHAR(100)DECLARE @Sql NVARCHAR(4000)DECLARE @SqlCount NVARCHAR(4000)DECLARE @Top intif(@sys_Begin <=0)    set @sys_Begin=0else    set @sys_Begin=@sys_Begin-1IF ISNULL(@sys_Where,‘‘) = ‘‘    SET @new_where1 =  ELSE    SET @new_where1 =  WHERE  + @sys_WhereIF ISNULL(@sys_Order,‘‘) <> ‘‘ BEGIN    SET @new_order1 =  ORDER BY  + Replace(@sys_Order,desc,‘‘)    SET @new_order1 = Replace(@new_order1,asc,desc)    SET @new_order2 =  ORDER BY  + @sys_OrderENDELSEBEGIN    SET @new_order1 =  ORDER BY ID DESC    SET @new_order2 =  ORDER BY ID ASCENDSET @SqlCount = SELECT @RCount=COUNT(1),@PCount=CEILING((COUNT(1)+0.0)/            + CAST(@sys_PageSize AS NVARCHAR)+) FROM  + @sys_Table + @new_where1EXEC SP_EXECUTESQL @SqlCount,N@RCount INT OUTPUT,@PCount INT OUTPUT,               @RCount OUTPUT,@PCount OUTPUTIF @sys_PageIndex > CEILING((@RCount+0.0)/@sys_PageSize)    --如果输入的当前页数大于实际总页数,则把实际总页数赋值给当前页数BEGIN    SET @sys_PageIndex =  CEILING((@RCount+0.0)/@sys_PageSize)ENDset @sql = select + @sys_fields + from  + @sys_Table +  w1     +  where + @sys_Key + in (        +select top + ltrim(str(@sys_PageSize)) +  + @sys_Key +  from         +(            +select top  + ltrim(STR(@sys_PageSize * @sys_PageIndex + @sys_Begin)) +   + @sys_Key +  FROM          + @sys_Table + @new_where1 + @new_order2         +) w  + @new_order1    +)  + @new_order2print(@sql)Exec(@sql)GO

 


高效的SQLSERVER分页查询(推荐)