[英]How to group by date
下面我不能按照以下數字進行分組 。
我試圖將Group By放在不同的行中,但不起作用。
SELECT SUM(a.NetAmount) AS TotalDonation
FROM (
SELECT
(
CASE WHEN bt.BalanceTransactionCurrencyID = 17
THEN bt.BalanceTransactionNet
ELSE
bt.BalanceTransactionNet * (SELECT TOP 1 ExrateValue FROM Exrate WHERE ExrateDate < bt.BalanceTransactionCreated AND bt.BalanceTransactionCurrencyID = CurrencyID ORDER BY ExrateDate Desc)
END
) AS NetAmount
FROM Charge as ch
JOIN BalanceTransaction as bt ON (ch.BalanceTransactionID = bt.BalanceTransactionID)
WHERE ch.ChargeCreatedDate BETWEEN '3-1-2019' AND '3-31-2019'
) AS a
我想看:
Days Total Amount
March 1 xxxx
March 2 xxxx
March 3 xxx
以下代碼有望顯示您要查找的內容
SELECT a.Days AS Days, SUM(cast(a.NetAmount as decimal(16,9))) AS TotalDonation
FROM (
SELECT
(
CASE WHEN bt.BalanceTransactionCurrencyID = 17
THEN bt.BalanceTransactionNet
ELSE
bt.BalanceTransactionNet * (SELECT TOP 1 ExrateValue FROM Exrate WHERE ExrateDate < bt.BalanceTransactionCreated AND bt.BalanceTransactionCurrencyID = CurrencyID ORDER BY ExrateDate Desc)
END
) AS NetAmount,
ch.ChargeCreatedDate as Days
FROM Charge as ch
JOIN BalanceTransaction as bt ON (ch.BalanceTransactionID = bt.BalanceTransactionID)
WHERE ch.ChargeCreatedDate BETWEEN '3-1-2019' AND '3-31-2019'
) AS a GROUP BY a.Days
這應該足夠了。 您需要在查詢中SELECT
所需的值才能使其顯示。 此外,在使用SUM()
函數時,您需要指定組值。
MySQL不使用TOP
。 使用LIMIT
:
SELECT ChargeCreatedDate, SUM(netamount)
FROM (SELECT ch.ChargeCreatedDate,
(CASE WHEN bt.BalanceTransactionCurrencyID = 17
THEN bt.BalanceTransactionNet
ELSE bt.BalanceTransactionNet * (SELECT e.ExrateValue
FROM Exrate e
WHERE e.ExrateDate < bt.BalanceTransactionCreated AND
e.CurrencyID = bt.BalanceTransactionCurrencyID
ORDER BY ExrateDate Desc
LIMIT 1
)
END) AS NetAmount
FROM Charge ch JOIN
BalanceTransaction bt
ON ch.BalanceTransactionID = bt.BalanceTransactionID
WHERE ch.ChargeCreatedDate BETWEEN '2019-03-01' AND '2019-03-31'
) chtbt
GROUP BY ChargeCreatedDate;
如果您碰巧使用SQL Server,則可以FETCH FIRST 1 ROW ONLY
使用FETCH FIRST 1 ROW ONLY
替換LIMIT 1
。
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