以下是我的工作:

CAST(GETDATE() AS CHAR(3))

select monthname(curdate());

OR

select monthname('2013-12-12');

要将月号转换为月名，请尝试以下步骤

declare @month smallint = 1
select DateName(mm,DATEADD(mm,@month - 1,0))

to_char(to_date(V_MONTH_NUM,'MM'),'MONTH')

其中V_MONTH_NUM是月份号

SELECT to_char(to_date(V_MONTH_NUM,'MM'),'MONTH')  from dual;

SQL server中没有系统定义的函数。但是您可以创建自己的用户定义函数—标量函数。您可以在数据库的对象资源管理器中找到标量函数:可编程性->函数->标量值函数。下面，我使用一个表变量将它们结合在一起。

--Create the user-defined function
CREATE FUNCTION getmonth (@num int)
RETURNS varchar(9) --since 'September' is the longest string, length 9
AS
BEGIN

DECLARE @intMonth Table (num int PRIMARY KEY IDENTITY(1,1), month varchar(9))

INSERT INTO @intMonth VALUES ('January'), ('February'), ('March'), ('April'), ('May')
                           , ('June'), ('July'), ('August') ,('September'), ('October')
                           , ('November'), ('December')

RETURN (SELECT I.month
        FROM @intMonth I
        WHERE I.num = @num)
END
GO

--Use the function for various months
SELECT dbo.getmonth(4) AS [Month]
SELECT dbo.getmonth(5) AS [Month]
SELECT dbo.getmonth(6) AS [Month]

你可以这样得到日期。 -用户表

id name created_at
1  abc  2017-09-16
2  xyz  2017-06-10

您可以像这样获得monthname

select year(created_at), monthname(created_at) from users;

输出

+-----------+-------------------------------+
| year(created_at) | monthname(created_at)  |
+-----------+-------------------------------+
|      2017        | september              |
|      2017        | june                   |