計數在Oracle

Question

多個具有相同數據值的購買的，我有以下表

我如何寫SQL語句來找出有多少採購一直存在於其中至少有1000個購買與相同的ServiceType，PaymentType和GST值？

我知道我需要使用count集合，我想查詢應該這樣開始

感謝

Answer 1

我認爲你需要計算的，而不是總和。或者，如果您需要總金額，請總結金額。

SELECT COUNT(PurchaseNo) 
FROM PURCHASE 
GROUP BY ServiceType, PaymentType, GST 
HAVING COUNT(PurchaseNo) >= 1000 

Answer 2

select count(*) 
from PURCHASE 
group by ServiceType, PaymentType, GST 
having count(*) >= 1000 

Answer 3

你可以這樣做：

select COUNT(*),ServiceType, PaymentType, GST 
FROM PURCHASE 
having count(*) > 1000 
group by ServiceType, PaymentType, GST;