Builds a comma separated list given a data frame with two fiends, primary
repeating values and secondary values to be summarized with comma separated
in the same field
Usage
BuildCSList(data, pri, sec)
Arguments
data
data frame containing primary and secondary data columns
pri
Primary field name (repeating values)
sec
Secondary field (values would be added to same record,
comma separated)
Value
a data frame with two fields Primary and secondary (comma
separated list)