Question

我正在尝试将两个结果列合二为一。我的疑问是：

 SELECT Datepart(Year, Date) As Annee, Datepart(Quarter, Date) AS Trimestre,
 Sum(CASE WHEN [Type] = 'A' THEN 1 ELSE 0 END) A,
 Sum(CASE WHEN [Type] = 'B' THEN 1 ELSE 0 END) B
 FROM myTable
 WHERE Date between '20150401' and '20160930'
 GROUP BY Datepart(Year, Date), DATEPART(Quarter, Date) 
 ORDER BY 1,2

我想得到第一列如下结果：

|  Period  | A | B |
  2015 - 2
  2015 - 3
  2015 - 4
    ...

我尝试使用“选择Concat（Datepart（年份，日期），Datepart（季度，日期）”以及其他一些不起作用的东西。我想做的甚至可能吗？

Answer 1

Datepart返回一个数字。在连接之前将其转换为字符串。

select convert(varchar(4),datepart(year, getdate())) + ' - ' + convert(varchar(2),datepart(month, getdate()))

Answer 2

Ue datename()：

SELECT datename(Year, Date) + ' - ' + datename(Quarter, Date) as Trimestre,
       Sum(CASE WHEN [Type] = 'A' THEN 1 ELSE 0 END) as A,
       Sum(CASE WHEN [Type] = 'B' THEN 1 ELSE 0 END) as B
FROM myTable
WHERE Date between '20150401' and '20160930'
GROUP BY datename(Year, Date) + ' - ' + datename(Quarter, Date) 
ORDER BY 1, 2;

这会返回一个字符串，因此您不必担心转换。

Answer 3

SELECT 
    CONCAT(CONVERT(VARCHAR(4), 
    Datepart(Year,Date)), ' - ', 
    CONVERT(VARCHAR(1), 
    Datepart(Quarter, Date))), ...

Concat包含datepart的两列

3 个答案: