MSSQL Server 日期时间格式化的方法

日期时间是我们经常会用到的一个系统函数，mssql里面的日期时间函数可以显示不同的格式根据要求，编程之家跟大家分享：Convert​系统函数格式化时间的方法。

请复制以下代码执行

DECLARE @Now datetime
SET @Now = GETDATE()
select convert(nvarchar(MAX), @Now, 0) as output, 0 as style 
union select convert(nvarchar(MAX), @Now, 1), 1
union select convert(nvarchar(MAX), @Now, 2), 2
union select convert(nvarchar(MAX), @Now, 3), 3
union select convert(nvarchar(MAX), @Now, 4), 4
union select convert(nvarchar(MAX), @Now, 5), 5
union select convert(nvarchar(MAX), @Now, 6), 6
union select convert(nvarchar(MAX), @Now, 7), 7
union select convert(nvarchar(MAX), @Now, 8), 8
union select convert(nvarchar(MAX), @Now, 9), 9
union select convert(nvarchar(MAX), @Now, 10), 10
union select convert(nvarchar(MAX), @Now, 11), 11
union select convert(nvarchar(MAX), @Now, 12), 12
union select convert(nvarchar(MAX), @Now, 13), 13
union select convert(nvarchar(MAX), @Now, 14), 14
--15 to 19 not valid
union select convert(nvarchar(MAX), @Now, 20), 20
union select convert(nvarchar(MAX), @Now, 21), 21
union select convert(nvarchar(MAX), @Now, 22), 22
union select convert(nvarchar(MAX), @Now, 23), 23
union select convert(nvarchar(MAX), @Now, 24), 24
union select convert(nvarchar(MAX), @Now, 25), 25
--26 not valid
union select convert(nvarchar(MAX), @Now, 100), 100
union select convert(nvarchar(MAX), @Now, 101), 101
union select convert(nvarchar(MAX), @Now, 102), 102
union select convert(nvarchar(MAX), @Now, 103), 103
union select convert(nvarchar(MAX), @Now, 104), 104
union select convert(nvarchar(MAX), @Now, 105), 105
union select convert(nvarchar(MAX), @Now, 106), 106
union select convert(nvarchar(MAX), @Now, 107), 107
union select convert(nvarchar(MAX), @Now, 108), 108
union select convert(nvarchar(MAX), @Now, 109), 109
union select convert(nvarchar(MAX), @Now, 110), 110
union select convert(nvarchar(MAX), @Now, 111), 111
union select convert(nvarchar(MAX), @Now, 112), 112
union select convert(nvarchar(MAX), @Now, 113), 113
union select convert(nvarchar(MAX), @Now, 114), 114
union select convert(nvarchar(MAX), @Now, 120), 120
union select convert(nvarchar(MAX), @Now, 121), 121
--122 to 125 not valid
union select convert(nvarchar(MAX), @Now, 126), 126
union select convert(nvarchar(MAX), @Now, 127), 127
--128, 129 not valid
union select convert(nvarchar(MAX), @Now, 130), 130
union select convert(nvarchar(MAX), @Now, 131), 131
--132 not valid
 
order BY style

输出结果

时间格式化适用场景

适用于按时间做数据统计，如：按时间段统计用户登录记录，精确到分钟；范例代码如下：

SELECT SUBSTRING(CONVERT(NVARCHAR(20), loginTime, 20), 0, 17) AS Date, COUNT(*) AS Count
FROM   UserLogin
WHERE  loginTime BETWEEN '2016-7-1 00:16:02' AND '2016-7-6 10:16:09'
GROUP BY
       SUBSTRING(CONVERT(NVARCHAR(20), loginTime, 20), 0, 17)
ORDER BY
       SUBSTRING(CONVERT(NVARCHAR(20), loginTime, 20), 0, 17) AS