As title: Why is aggregation function bad idea for RESTful? Although I know CRUD is good for RESTful. For example, the resource is 'employee', and client needs to retrive sum of total 'salary' of all ...
I have k csv files (5 csv files for example), each file has m fields which produce a key and n values. I need to produce a single csv file with aggregated data. I'm looking for the most efficient ...