我需要獲得按部門分組的月份活動數

我想按月計算活動數，並按部門名稱對其進行分組。該報告基於我輸入查詢「@rptDate」的日期參數。我在下面的工作，但我猜測有一個更好的方式做同樣的事情，並希望有人可以擺脫一些光。我需要獲得按部門分組的月份活動數

Select Count(*) As Month1Count, 0 As Month2Count, 0 As Month3Count, 
0 As Month4Count, 0 as Month5Count, 0 as Month6Count, 0 as Month7Count, 
0 as Month8Count, 0 as Month9COunt, 0 as Month10Count, 0 as Month11Count, 
0 as Month12Count, DepartmentName,ActivityDescription 
from reports.WorkOrders 
WHERE Month(BeginDate) = Month(@rptDate) and Year(BeginDate) = Year(@rptDate) 
Group By DepartmentName, ActivityDescription 

UNION 

Select 0 As Month1Count, COUNT(*) As Month2Count, 0 as Month3Count, 
0 as Month4Count, 0 as Month5Count, 0 as Month6Count, 0 as Month7Count, 
0 as Month8Count, 0 as Month9COunt, 0 as Month10Count, 0 as Month11Count, 
0 as Month12Count, DepartmentName,ActivityDescription 
from reports.WorkOrders 
WHERE Month(BeginDate) = Month(@rptDate) + 1 and Year(BeginDate) = Year(DateAdd(month,1,@rptDate)) 
Group By DepartmentName, ActivityDescription 

UNION 

Select 0 As Month1Count, 0 As Month2Count, Count(*) as Month3Count, 
0 as Month4Count, 0 as Month5Count, 0 as Month6Count, 0 as Month7Count, 
0 as Month8Count, 0 as Month9COunt, 0 as Month10Count, 0 as Month11Count, 
0 as Month12Count, DepartmentName, ActivityDescription 
from reports.WorkOrders 
WHERE Month(BeginDate) = Month(@rptDate) + 2 and Year(BeginDate) = Year(DateAdd(month,2,@rptDate)) 
Group By DepartmentName, ActivityDescription

來源

2017-04-27 Carl Brydon

見http://meta.stackoverflow.com/questions/333952/why-should-i-provide-an-mcve-for-what-seems-to-me-to-be-a-very-simple- sql-query – Strawberry

提供的代碼將爲您提供（最多）每個部門/活動的三行數據，分別具有第1,2和3個月的行數以及其他月份的零。如果這就是你想要的，我可以做不同的事情。但是我猜測這裏有一個包裝器，它爲每個部門和活動增加了一個月的總和（並且還有9個子查詢來覆蓋今年剩餘時間。請讓我們知道你需要 –

HI Steve，是的，你是對的，還有9個子查詢可以獲得今年餘下的時間，是的，每個部門有一個包裝將每月的數據彙總成一行。，但它似乎很麻煩，並希望可能有一個更簡潔的方式來完成相同的事情。 –

我沒有測試以下，因此它可能有一些拼寫錯誤或小錯誤，但我認爲以下是你想要什麼：

SELECT 
    sum(case when Month(BeginDate) = Month(dateadd(month, 0, @rptDate)) then 1 else 0 end) as Month1Count, 
    sum(case when Month(BeginDate) = Month(dateadd(month, 1, @rptDate)) then 1 else 0 end) as Month2Count, 
    sum(case when Month(BeginDate) = Month(dateadd(month, 2, @rptDate)) then 1 else 0 end) as Month3Count, 
    sum(case when Month(BeginDate) = Month(dateadd(month, 3, @rptDate)) then 1 else 0 end) as Month4Count, 
    sum(case when Month(BeginDate) = Month(dateadd(month, 4, @rptDate)) then 1 else 0 end) as Month5Count, 
    sum(case when Month(BeginDate) = Month(dateadd(month, 5, @rptDate)) then 1 else 0 end) as Month6Count, 
    sum(case when Month(BeginDate) = Month(dateadd(month, 6, @rptDate)) then 1 else 0 end) as Month7Count, 
    sum(case when Month(BeginDate) = Month(dateadd(month, 7, @rptDate)) then 1 else 0 end) as Month8Count, 
    sum(case when Month(BeginDate) = Month(dateadd(month, 8, @rptDate)) then 1 else 0 end) as Month9Count, 
    sum(case when Month(BeginDate) = Month(dateadd(month, 9, @rptDate)) then 1 else 0 end) as Month10Count, 
    sum(case when Month(BeginDate) = Month(dateadd(month, 10, @rptDate)) then 1 else 0 end) as Month11Count, 
    sum(case when Month(BeginDate) = Month(dateadd(month, 11, @rptDate)) then 1 else 0 end) as Month12Count 
    DepartmentName, 
    ActivityDescription 
FROM 
    reports.WorkOrders 
WHERE 
    Year(BeginDate) + right('0'+Month(BeginDate),2) 
     between Year(@rptDate) + right('0'+Month(@rptDate),2) 
      and Year(dateadd(month,11,@rptDate)) + right('0'+Month(dateadd(month,11,@rptDate)),2) 
GROUP BY 
    DepartmentName, 
    ActivityDescription

不要讓我知道你怎麼弄與此。如果我犯了拼寫錯誤，並且無法更正它們，請報告錯誤消息和/或結果的任何問題。

來源

2017-04-30 22:28:09

還沒有收到你的回覆@ CarlBrydon，這是否工作？ –

是的，它是否史蒂夫 - 抱歉，延遲迴復！ –

我需要獲得按部門分組的月份活動數

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