将每个客户的销售额与去年的销售额进行比较

Question

我有 2 个查询，我使用 UNION 来比较 2 年内每个客户的销售价值。下面 return 有 2 列，一列用于组织，一列用于销售 value/customer。但是 2 年的拆分是行不通的。它似乎将所有值都拉到一列中，而不是将 2018 年的一列和 2019 年的一列。也许我应该使用连接或子查询？

return 结果类似于：

Organization    Last Year      Previous year
CUS                 12000        160000
etc

SELECT Top 25
    FORMAT(SUM(dbo.ARInvoices.arpFullInvoiceSubtotalBase), 'C2') AS "previousyear ", dbo.Organizations.cmoOrganizationID AS "Organization"
FROM (dbo.ARInvoices
LEFT OUTER JOIN dbo.Organizations ON dbo.ARInvoices.arpCustomerOrganizationID = dbo.Organizations.cmoOrganizationID)  
WHERE  YEAR(arpInvoiceDate) = year(DATEADD(year, -2, getdate()))AND arpInvoiceType = 1
GROUP BY dbo.Organizations.cmoOrganizationID

UNION

SELECT Top 25
    FORMAT(SUM(dbo.ARInvoices.arpFullInvoiceSubtotalBase), 'C2') AS "Lastyear", dbo.Organizations.cmoOrganizationID AS "Organization"
FROM (dbo.ARInvoices
LEFT OUTER JOIN dbo.Organizations ON dbo.ARInvoices.arpCustomerOrganizationID = dbo.Organizations.cmoOrganizationID)   
WHERE  YEAR(arpInvoiceDate) = year(DATEADD(year, -1, getdate()))AND arpInvoiceType = 1
GROUP BY dbo.Organizations.cmoOrganizationID'

Answer 1

您可以进行条件聚合

select
    sum(case 
        when arpInvoiceDate >= datefromparts(year(getdate()) - 2, 1, 1) 
             and arpInvoiceDate < datefromparts(year(getdate()) - 1, 1, 1) 
        then i.arpFullInvoiceSubtotalBase
    end) as previousYear,
    sum(case 
        when arpInvoiceDate >= datefromparts(year(getdate()) - 1, 1, 1)
        then i.arpFullInvoiceSubtotalBase
    end) as lastYear
from dbo.ARInvoices i 
inner join dbo.Organizations o ON i.arpCustomerOrganizationID = o.cmoOrganizationID
where arpInvoiceType = 1 and arpInvoiceDate >= datefromparts(year(getdate()) - 2, 1, 1)
group by o.cmoOrganizationID

备注：

我使用 INNER JOIN 而不是 LEFT JOIN，因为 GROUP BY 子句中使用了左侧的一列 table [=14] =]
table 别名确实使查询更短，更易于阅读
我更改了日期过滤的实现，因此 table 列上没有使用日期函数（这使查询更有效率）

将每个客户的销售额与去年的销售额进行比较

Compare Sales with last year sales per customer

tsql

sql-server

union

group-by

sum