As per the attached snapshot of spreadsheet, I have putted some values in the cell A2:A9 and Cell B2:B9. In the said array B2:B9 some cell elements are empty and some are non empty. I have build formula in the cell C2
=QUERY(A2:B,"select Col1 where Col2 is not null")
to find non empty cell. To find empty cell I have build a formula in cell D2
=QUERY(A2:B,"select Col1 where Col2 is null")
But, unfortunately i am not able to find required result as given in the cell E2:E9 and F2:F9 as attached in the snapshot. So kindly help me to finding corresponding empty and non empty cell.
>Solution :
non-blank
=arrayformula(if(B2:B<>"",A2:A,))
blank
=arrayformula(if(B2:B="",A2:A,))