如何从自定义日期字符串中获取周数
[英]How to get week number from custom date string
问题描述
I have this type of strings 
我有这种类型的字符串
DECW42012
JANW12013
JANW22013
JANW32013
JANW42013
JANW52013
FEBW12013
Can i somehow get week number (not in month but in year) from that string ? 我可以以某种方式获得该字符串的周数（不是月份而是年份）吗？ thank you 谢谢
2 个解决方案
解决方案1
2 已采纳 2014-11-02 12:05:02
=WEEKNUM(DATE(RIGHT(A1,4),MONTH(LEFT(A1,3)&1),1),2)+(MID(A1,5,1)-1)
应该做的伎俩。
解决方案2
1
You could start with the following, 你可以从以下开始，
=WEEKNUM(DATEVALUE(LEFT(A1,3)&RIGHT(A1,4))+(MID(A1,5,1)-1)*7)
The WEEKNUM function has an optional return_type parameter that I have not implemented and that is one that you should pay close attention to if you wish to get the correct returns for your week numbe schedule. WEEKNUM函数有一个我没有实现的可选return_type参数，如果你希望获得周数量表的正确回报，那么你应该密切注意这个参数。
Edited: dropped the week-of-month by 1 before multiplication 编辑：在乘法之前将周数减少1
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