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This function returns the column number of a reference.
COLUMN(reference)
The argument is a cell or a single area.
If the reference is omitted, the reference of the cell that the function is in is used.
Accepts cell references. Returns numeric data.
COLUMN(A9)
gives the result 1
COLUMN(A1:A5)
gives the result 1
This function is available in product version 3.0 or later.