It should be [#"D/C"] since "/" is an operator. Not strange, but normal![]()
Yes, that's strange indeed (I would not have expected it).What I meant was that without renaming my column, [DC] in the formula also works
I wanted to say that [D/C] fails because of the "/". Also if you would have a column named "DC", you get into trouble. So it is best to use the one with # and double quotes. I always double click on the available column at the side when writing custom column formulas.