问题
Columns A and B both have dates. If the date in column A is greater than the date in the same row of column B, the row should be counted. To add context, I am trying to count the number of rows where the completion date is past the due date. How can this be accomplished?
Thanks.
回答1:
You can try this:
=SUMPRODUCT(--(A:A>B:B))
It will sum all instances in the range where the date in column A is greater than that in column B.
You can also do this, however it needs to be entered as an array formula (Ctrl+Shift+Enter):
=SUM(IF(A:A>B:B,1,0))
回答2:
Create a column that has a function to perform the comparison, e.g. =A1 > B1. This will give you a column that contains TRUE or FALSE for your comparison. Then you can use the COUNTIF function to count the results of this function, e.g. =COUNTIF(C:C, "=TRUE").
回答3:
I would add a new additional column (say C) which should have this formula =IF(A1>B1; 1; 0). Then you can add a new cell =SUM(C:C) to get the result number.
来源：https://stackoverflow.com/questions/14045332/excel-countif-date-in-column-a-is-greater-than-column-b