DataWorks中DATEDIFF(a.time,b.time,”ff3″)函数DATEDIFF后面的ff3是代表获取什么值？
DataWorks函数DATEDIFF后面的ff3是代表获取什么值？[阿里云DataWorks]
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DataWorks中DATEDIFF(a.time,b.time,”ff3″)函数DATEDIFF后面的ff3是代表获取什么值？
https://help.aliyun.com/zh/maxcompute/user-guide/date-functions?spm=a2c4g.11186623.0.i2#:~:text=%7C%2B%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2B%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2B%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2B%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2B%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2B%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2D%2B-,DATEDIFF,-%E5%91%BD%E4%BB%A4%E6%A0%BC%E5%BC%8F 可以参考看下，此回答整理自钉群“DataWorks交流群(答疑@机器人)”
在DataWorks中，DATEDIFF函数用于计算两个日期之间的时间差，可以返回整数或浮点数。DATEDIFF函数后面的参数可以是以下几种：
在DATEDIFF函数中，ff3表示以毫秒为单位计算时间差。例如，DATEDIFF(a.time,b.time,”ff3″)可以计算a.time和b.time之间的时间差，单位为毫秒。
请注意，DATEDIFF函数返回的时间差可能是一个整数，也可能是一个浮点数。如果返回的时间差是一个浮点数，那么这个浮点数表示的时间差是以毫秒为单位的，但是这个浮点数可能是小数，因此需要进行适当的处理。