Countif formula if a row doesn't have any children
Is there a way to write a COUNTIF formula to count the rows that do not have any children? I would like to write a COUNTIFS formula that counts:
1. % Complete is < 1
2. Finish is in the past
3. Row doesn't have any children
I know how to write the first two. I'm struggling to write the 3rd one about children. Below is a screenshot of what I'm working with.
Comments

Hello,
I think that you might need another column to define parents here so you can count parentless rows.
If you create a new text/number column (you can hide it later) and place a formula like this in every cell: =IF(COUNT(CHILDREN(Type@row)) > 0, 0, 1)
Where Type is the name of the column you're trying to count, you'll be able to include that in your COUNTIFS function:
=COUNTIFS([% Complete]:[% Complete], < 1, Finish:Finish, < TODAY(), Parent:Parent, 1)

That's a good idea Shaine and I might use that. The only thing is that if project managers are building/making changes to their project plans, then I will have to manually drag the formula down to the new rows. I was hoping to avoid that.

Hi Shaine,
Could the formula =IF(COUNT(CHILDREN([Task Name]5)) > 0, 0, 1) that you wrote be turned into a COUNTIF formula?
I'm trying =COUNTIF(CHILDREN([Task Name]:[Task Name]), = 0) but it returns a 0.
Any thoughts?
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