Question

我想显示以下内容：

month no.      1
month          January
total income   $xx

一站式“查询”

目前我正在使用下面的代码来显示我想要的输出。但是，我想知道是否可以在一个查询中对其进行编码以显示所需的输出？

当前使用的代码：

DECLARE @january int = 0
SELECT Month(Transaction_Date) AS Month_Number,
DATENAME(MONTH, DATEADD(MONTH, @january, 0)) AS 'Month',
CONCAT('$', SUM(Credit_Amount)) AS Total_Income
FROM Income 
WHERE Transaction_Date 
BETWEEN '2020-01-01' 
AND '2020-01-31'
GROUP BY 
MONTH(Transaction_Date)

DECLARE @february int = 1
SELECT Month(Transaction_Date) AS Month_Number,
DATENAME(MONTH, DATEADD(MONTH, @february, 0)) AS 'Month',
CONCAT('$', SUM(Credit_Amount)) AS Total_Income
FROM Income 
WHERE Transaction_Date 
BETWEEN '2020-02-01' 
AND '2020-02-29'
GROUP BY 
MONTH(Transaction_Date)

DECLARE @march int = 2
SELECT Month(Transaction_Date) AS Month_Number,
DATENAME(MONTH, DATEADD(MONTH, @march, 0)) AS 'Month',
CONCAT('$', SUM(Credit_Amount)) AS Total_Income
FROM Income 
WHERE Transaction_Date 
BETWEEN '2020-03-01' 
AND '2020-03-31'
GROUP BY 
MONTH(Transaction_Date)

DECLARE @april int = 3
SELECT Month(Transaction_Date) AS Month_Number,
DATENAME(MONTH, DATEADD(MONTH, @april, 0)) AS 'Month',
CONCAT('$', SUM(Credit_Amount)) AS Total_Income
FROM Income 
WHERE Transaction_Date 
BETWEEN '2020-04-01' 
AND '2020-04-30'
GROUP BY 
MONTH(Transaction_Date)

Answer 1

您可以按 EOMONTH 分组，即每月的最后一天

SELECT
    Month(EOMONTH(Transaction_Date)) AS Month_Number,
    DATENAME(MONTH, EOMONTH(Transaction_Date)) AS [Month],
    CONCAT('$', SUM(Credit_Amount)) AS Total_Income
FROM Income 
WHERE Transaction_Date >= '2020-01-01' AND Transaction_Date < '2020-05-01'
GROUP BY 
    EOMONTH(Transaction_Date);

将多个查询转换为一个

1 个答案: