Question

概述：
比较各种账户的代理商的日常交易，找出代理商和公司持股之间的差异，仅显示新的;当前交易中的代码，但不是之前的交易。

目标：
按最高频率的代码（即苹果）对交易进行排序。

当前代码：

SELECT 
    Count(CurrentTrade.Code) AS CountOfCode, 
    CurrentTrade.portfolio_code, 
    CurrentTrade.Type, 
    CurrentTrade.Code, 
    sum(CurrentTrade.Custodian_holding) AS AgentHolding, 
    sum(CurrentTrade.Company_holding) AS CompanyHolding, 
    sum(CurrentTrade.Difference) AS TotalDifference
FROM 
    CurrentTrade 
    LEFT JOIN PrevTrade 
    ON CurrentTrade.Company_holding = PrevTrade.Company_holding
WHERE 
    PrevTrade.Company_holding) Is Null
GROUP BY CurrentTrade.Code, CurrentTrade.portfolio_code, CurrentTrade.Code, CurrentTrade.Type
ORDER BY count(CurrentTrade.Code);

当前结果：

 CountOfCode        account_code        Type        Code        AgentHodling        CompanyHolding        TotalDifference
 1                  acc001049        prod        mango        2500                  0        2500
 1                  acc636903        prod        mango        481081.29        481081.285        0.01
 1                  acc179186        prod        mango        453639.61        511285.81        -57646.2
 1                  acc179185        prod        mango        2775               2650        125
 1                  acc170001        prod        grapes       0                     1500        -1500
 1                  acc170000        prod        grapes       2500        0        2500
 1                  acc107104        prod        apple        49797.22        49797.28        -0.06
 1                  acc107103        prod        apple        0        -0.06        0.06
 1                  acc107102        prod        apple        2000        500        1500
 1                  acc107101        prod        apple        0        1500        -1500
 1                  acc001189        prod        apple        0        1090.513        -1090.513

参考：

我收到了这个答案（Order by count not sorting correctly - SQL (MS Access 2007)）所以这是一个跟进。

问题：

是否可以按频率排序而不汇总所有结果，仍然按最高频率（苹果，芒果，葡萄）显示订单，包括相关的帐号？
如果使用订单的总和，“不能在ORDER BY中具有聚合功能”，那么我不确定我是否可以这样做并且仍然将帐号分开？

Answer 1

将ORDER BY子句拉出到外部查询中，内部查询将计算频率，如下所示：

SELECT * FROM (
SELECT 
    Count(CurrentTrade.Code) AS CountOfCode, 
    CurrentTrade.portfolio_code, 
    CurrentTrade.Type, 
    CurrentTrade.Code, 
    sum(CurrentTrade.Custodian_holding) AS AgentHolding, 
    sum(CurrentTrade.Company_holding) AS CompanyHolding, 
    sum(CurrentTrade.Difference) AS TotalDifference
FROM 
    CurrentTrade 
    LEFT JOIN PrevTrade 
    ON CurrentTrade.Company_holding = PrevTrade.Company_holding
WHERE 
    PrevTrade.Company_holding) Is Null
GROUP BY CurrentTrade.Code, CurrentTrade.portfolio_code, CurrentTrade.Code, CurrentTrade.Type
) ORDER BY CountOfCode ASC

如何按频率订购而不汇总？

1 个答案: