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A Q on Stack Overflow asks how to merge two columns where each row has only one populated cell. The example was from (on the left) to (on the right): a|b a 0| ...
#1: Initial revision
Merge a pair of columns where in each row one is blank, without a formula
A [Q](https://stackoverflow.com/questions/64188649/how-can-i-merge-two-columns-with-data-where-if-one-columns-cell-is-empty-the-ad) on Stack Overflow asks how to merge two columns where each row has only one populated cell. The example was from (on the left) to (on the right): a|b a 0| 0 |1 1 |5 5 9| 9 Although the body included: >How can I quickly merge columns a and b in this way in libreoffice calc? The tag set included [excel] and the only A at present is stated to be for Excel (though it works in LibreOffice Calc also). That A suggests: =A1 & B1 in a new column and copied down. In Excel, is there a way to avoid the need (i) for use of a third column, (ii) to copy down and (iii) a formula?