Question

我正在尝试根据表格中的数据创建图表。在图表上，我想显示最近12个月的数据。通过使用以下代码，我当月的数据将与上个月的数据合并。现在说它的12月，所以我想显示最近12月（包括今年12月）的数据。如何更正查询？谢谢您的帮助。

SELECT MONTH(InvoiceDate) AS 'Month', COUNT (DISTINCT InvoiceNo) AS 'Total Invoice' FROM SalesDetail WHERE InvoiceDate > (GETDATE() - 365) 
OR MONTH(InvoiceDate) = MONTH(CURRENT_TIMESTAMP) 
AND YEAR(InvoiceDate) = (YEAR(CURRENT_TIMESTAMP) - 1)
GROUP BY MONTH(InvoiceDate)

Answer 1

我想您可以在下面的查询中尝试-

SELECT MONTH(InvoiceDate) AS 'Month', COUNT (DISTINCT InvoiceNo) AS 'Total Invoice'
FROM SalesDetail
WHERE YEAR(InvoiceDate) = (YEAR(CURRENT_TIMESTAMP) - 1)
AND MONTH(InvoiceDate) >= MONTH(CURRENT_TIMESTAMP)
GROUP BY MONTH(InvoiceDate)

所以基本上只比较过去和当前年份，只比较大于或等于当年月份的月份。

Answer 2

您可以使用以下内容：

SELECT YEAR(InvoiceDate) AS 'Year', MONTH(InvoiceDate) AS 'Month', COUNT (DISTINCT InvoiceNo) AS 'Total Invoice' 
FROM SalesDetail 
WHERE (
  YEAR(InvoiceDate) = YEAR(CURRENT_TIMESTAMP) - 1 AND MONTH(InvoiceDate) >= MONTH(CURRENT_TIMESTAMP)
) OR (
  YEAR(InvoiceDate) = YEAR(CURRENT_TIMESTAMP) AND MONTH(InvoiceDate) <= MONTH(CURRENT_TIMESTAMP)
)
GROUP BY YEAR(InvoiceDate), MONTH(InvoiceDate)

如何将数据与不同年份的同一个月分开？

2 个答案: