Dear experts, I'm trying to sort a column which has records like 'AA0276', 'A2B5Q', 'AB8ER', ... After I sort the data, I'm running a data step and use the sorted column in a by statement. The data step returns a ERROR which indicates that the by variable couldn't sorted for the values like 'AA0276' which have two consequent character values. ERROR: Error: BY variables are not properly sorted. How can I fix this problem?
... View more