.net SQL分页

本文探讨了SQL中实现分页查询的技术,并通过具体案例展示了如何使用SQL进行复杂的数据聚合操作,包括利用子查询和窗口函数来优化查询性能。

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1.分页SQL

declare  @pagesize integer,@cpage integer;  --变量定义
set @pagesize =200;                         --页码大小
set @cpage = 5;                             --当前页

---@cpage 为 第一页的时候
--select top (@pagesize) * from Member order by ID desc
----
select top (@pagesize) * from Member where ID 
not in(
    select top ((@cpage - 1) * @pagesize) ID from Member order by ID desc
    ) 
order by ID desc

 

declare @pagesize integer,@cpage integer;
set @pagesize =10;
set @cpage = 1;

SELECT TOP (@pagesize) * FROM 
(
    SELECT row_number() over(order by AddTime) as row_number,* 
    FROM (
        SELECT TOP(100) a.AddTime, type = 0, SUM(b.account) AS balance FROM Orders a, CashierDetail b 
            WHERE a.OrderId = b.OrderId AND b.MemberId= '39085' AND a.MemberId = b.MemberId 
            AND b.Account > 0 GROUP BY a.addtime ORDER BY AddTime DESC 
        UNION ALL 
        SELECT TOP(100) AddTime as AddTime,1 as type,Balance as Balance FROM MemberRech 
            WHERE MemberId = '39085' ORDER BY AddTime DESC
) Temp ) TEMPTABLE WHERE 1=1 
AND row_number NOT IN
(
    SELECT TOP ((@cpage - 1) * @pagesize) row_number FROM 
    (
        SELECT row_number() over(order by AddTime) as row_number,* 
        FROM (
            SELECT TOP(100) a.AddTime, type = 0, SUM(b.account) AS balance FROM Orders a, CashierDetail b 
                WHERE a.OrderId = b.OrderId AND b.MemberId= '39085' AND a.MemberId = b.MemberId 
                AND b.Account > 0 GROUP BY a.addtime ORDER BY AddTime DESC 
            UNION ALL 
            SELECT TOP(100) AddTime as AddTime,1 as type,Balance as Balance FROM MemberRech 
                WHERE MemberId = '39085' ORDER BY AddTime DESC
    ) Temp ) TEMPTABLE WHERE 1=1 ORDER BY row_number DESC
)
ORDER BY row_number DESC 

 

转载于:https://www.cnblogs.com/rinack/p/4543815.html

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