Sql server 如何在同一查询中使用Count和Sum？

我使用聚合函数“SUM”编写了以下查询

---

当前，此查询返回2行。我要检索此查询的计数。如何计算上述查询的行数？

您可以将

@@ROWCOUNT

添加到查询中，这也会给出最终结果集以及结果集中所有行的计数

SELECT COUNT(*) as Total_Rows
FROM
(
SELECT D.PODetailID as PODetailID, SUM(D.AcceptedQty) as Total_AcceptedQty
FROM STR_MRVDetail D 
INNER JOIN STR_MRVHeader H ON H.MRVID = D.MRVID 
INNER JOIN PUR_POHeader PH ON PH.POID = H.POID 
INNER JOIN PUR_PODetail PD ON PD.PODetailID = D.PODetailID
WHERE H.StatusID = 4
AND PH.POID = 839
AND (SELECT SUM(AcceptedQty) FROM STR_MRVDetail 
     WHERE STR_MRVDetail.PODetailID = PD.PODetailID) = 
     (SELECT POQuantity FROM PUR_PODetail 
      WHERE PUR_PODetail.PODetailID = PD.PODetailID)
GROUP BY D.PODetailID
) as t

SELECT D.PODetailID, SUM(D.AcceptedQty), @@ROWCOUNT FROM STR_MRVDetail D  
INNER JOIN STR_MRVHeader H ON H.MRVID = D.MRVID  
INNER JOIN PUR_POHeader PH ON PH.POID = H.POID  
INNER JOIN PUR_PODetail PD ON PD.PODetailID = D.PODetailID 
WHERE H.StatusID = 4 
AND PH.POID = 839 
AND (SELECT SUM(AcceptedQty) FROM STR_MRVDetail  
     WHERE STR_MRVDetail.PODetailID = PD.PODetailID) =  
     (SELECT POQuantity FROM PUR_PODetail  
      WHERE PUR_PODetail.PODetailID = PD.PODetailID) 
GROUP BY D.PODetailID 

---

您可以将

@@ROWCOUNT

添加到查询中，该查询还提供最终结果集以及结果集中所有行的计数

SELECT D.PODetailID, SUM(D.AcceptedQty), @@ROWCOUNT FROM STR_MRVDetail D  
INNER JOIN STR_MRVHeader H ON H.MRVID = D.MRVID  
INNER JOIN PUR_POHeader PH ON PH.POID = H.POID  
INNER JOIN PUR_PODetail PD ON PD.PODetailID = D.PODetailID 
WHERE H.StatusID = 4 
AND PH.POID = 839 
AND (SELECT SUM(AcceptedQty) FROM STR_MRVDetail  
     WHERE STR_MRVDetail.PODetailID = PD.PODetailID) =  
     (SELECT POQuantity FROM PUR_PODetail  
      WHERE PUR_PODetail.PODetailID = PD.PODetailID) 
GROUP BY D.PODetailID 

---

那么你想把计数（在本例中为2）作为一个单独的列吗？不，我不想显示。我只想计算行数，并将行数分配给一个整数变量。您的编程语言应该能够获取检索到的行数（或在显示行数时对其进行计数）。我需要在执行查询后获取检索到的行数，返回的行数将在

中可用。@@RowCount

。因此您想将计数（在本例中为2）作为一个单独的列来获取吗？不，我不想显示。我只想计算行数，并将行数分配给一个整数变量。您的编程语言应该有办法获取检索到的行数（或在显示行数时对行数进行计数）。我需要获取检索到的行数执行查询后，返回的行数将在

中可用。@@RowCount

。