The rank function returns the values of a column in ascending alphabetic order. By default missing values are considered in the ranking.
The values of the specified column will be placed in ascending order. Column is a mandatory parameter.
To not consider missing values, this parameter can be set to False. By default, its value is True.
Example - rank(column, usemissing)
The following examples use the Sales_2017 dataset, from which we have removed some values in the Sales attribute.
In the first example, we have a series of missing values in the Day attribute in our dataset, which we want to fill.
If we enter the formula
If, however, we do not want to consider missing values in the ranking, the second parameter, usemissing, must be set to false with the formula