ColA will have a date or NA. ColB will have a date. I would like Col C to be blank if ColA is blank, =Yes if ColB is <=ColA, =No if ColB is >ColA, and NA if ColA is NA
Is this possible??
I get this far, but not sure how to autmate the NA
=IF(ISBLANK([ColA]@row), "", IF([ColA]@row <= [ColB]@row, "yes", "no"))