SQL查询以获取从当前月份开始的月份列表

Question

我需要一个SQL 查询来列出从当前月份开始的一年中的月份。 我已经尝试过这个查询，但我需要将当前月份作为列表中的第一个。

DECLARE @year int
SET @year = 2016
SELECT number AS a,
    DATENAME(MONTH, cast(@year*100+number AS varchar) + '01') AS b
  FROM master.dbo.spt_values
  WHERE TYPE = 'P'
    AND number BETWEEN 1 AND 12

谢谢

Answer 1

看看这个查询。 只是为了演示，

DECLARE @YEAR INT
SET @YEAR = (SELECT YEAR(GETDATE()))
DECLARE @MONTH INT
SET @MONTH = (SELECT MONTH(GETDATE()))

DECLARE @DT TABLE(ID INT, MONTHNAME NVARCHAR(20))

INSERT INTO @DT SELECT NUMBER AS ID,
   DATENAME(MONTH, CAST(@YEAR*100+NUMBER AS VARCHAR) + '01')  AS MONTHNAME
FROM MASTER.DBO.SPT_VALUES   
WHERE TYPE = 'P' AND  
  NUMBER BETWEEN @MONTH AND 12

INSERT INTO @DT SELECT NUMBER AS ID,
   DATENAME(MONTH, CAST(@YEAR*100+NUMBER AS VARCHAR) + '01')  AS MONTHNAME

FROM MASTER.DBO.SPT_VALUES   
WHERE TYPE = 'P' AND  
  NUMBER BETWEEN 1 AND @MONTH -1

SELECT * FROM @DT 

Answer 2

这可以使用递归 cte 轻松解决：

;WITH CTE AS 
(
    SELECT  GETDATE() As TheDate, 
            DATENAME(MONTH, GETDATE()) As TheMonth
    UNION ALL 
    SELECT  DATEADD(MONTH, 1, TheDate), 
            DATENAME(MONTH, DATEADD(MONTH, 1, TheDate))
    FROM CTE 
    WHERE YEAR(DATEADD(MONTH, 1, TheDate)) = YEAR(GETDATE())
)

SELECT TheMonth
FROM CTE