How to use multiple if not or statements

Zach Henderson

I am receiving an "invalid data type" result when I run this:

=IF(NOT(ISBLANK([Start Date]@row)), NETWORKDAYS([Due Date]@row, IF([Date Completed]@row <> "", [Date Completed]@row, TODAY())))

and there is a null value for Due date.

How can I add OR statement to this so that if either Start Date OR Due date are (not) blank then it will continue the function?

James Keuning

You are getting that because Smartsheet is writing a date to that field, which is not a Date field. There is a way you can write a "date" to that field if this really what you want to do, basically explode the date into date parts and then reconstruct them as a string.

The answer to the question you ask is:

=IF(OR(NOT(ISBLANK([Start Date]@row)), NOT(ISBLANK([Due Date]@row))) = true, "True", "False")

Zach Henderson

Thanks for your help!

Right. I am not looking for a date to be written to the "days overdue" field. If either the start date or the due date are null, I just want to ignore the formula so that there's not an error in that cell.

If there are both a start date and a due date, the formula should then provide me a "days overdue" value (either positive or negative value).

So:

IF(NOT(ISBLANK([Start Date]@row))

AND

IF(NOT(ISBLANK([Due Date]@row))

Then

NETWORKDAYS([Due Date]@row, IF([Date Completed]@row <> "", [Date Completed]@row, TODAY())))

How do I put all of that together in a formula that will work?

Zach Henderson

Actually I got it! I should have been using AND instead of OR

=IF(AND(NOT(ISBLANK([Start Date]@row)), NOT(ISBLANK([Due Date]@row))), NETWORKDAYS([Due Date]@row, IF([Date Completed]@row <> "", [Date Completed]@row, TODAY())))

Works great. Thank you!