SQl，多個問題（加入參數並將一列放入一行

Question

我試圖按日期（mm/yyyy）對錶進行分組，然後按invoicetype進行分組，我嘗試將代碼放在下面的代碼中，但我一直在。錯誤 '無效的列日'

SELECT RIGHT(CONVERT(VARCHAR(10), case_createddate, 103), 7) AS Date, 
     case_invoicetype, 
     Sum(case_totalexvat) 
FROM cases AS ca 
WHERE case_primaryCompanyid = 1111 
GROUP BY ca.Date, 
      case_invoicetype 

我嘗試這樣做：

group by YEAR(case_createddate), MONTH(case_createddate) 

但我得到的錯誤：

case_createddate is invalid in the select list because it is not contained in either an aggregate function or the group by clause

有任何想法嗎 ？

感謝

Answer 1

您需要通過子句包括從選擇的組中的所有非聚合列。 ca.Date是不是在選擇，我懷疑你想這樣的：

SELECT RIGHT(CONVERT(VARCHAR(10), case_createddate, 103), 7) AS Date, 
     case_invoicetype, 
     Sum(case_totalexvat) 
FROM cases AS ca 
WHERE case_primaryCompanyid = 1111 
GROUP BY RIGHT(CONVERT(VARCHAR(10), case_createddate, 103), 7), 
      case_invoicetype 

Answer 2

使用GROUP BY子句對整個表達式

SELECT RIGHT(CONVERT(VARCHAR(10), case_createddate, 103), 7) AS Date, 
     case_invoicetype, 
     Sum(case_totalexvat) 
FROM cases AS ca 
WHERE case_primaryCompanyid = 1111 
GROUP BY RIGHT(CONVERT(VARCHAR(10), case_createddate, 103), 7), 
      case_invoicetype