Inconsistent behavior asking for non-existent columns

[antoniolucasnobar]

Testing https://github.com/chicojfp/queryfier-sample ,
if I ask only columns that are not mapped in the filter, the server returns an Error, but the SELECT is fired to the database (bringing all the columns). Ex.:

http://localhost:8080/cities?c=president&c=governor

AliasToBeanTrasformer expects alias to convert to desired entity/DTO, but, in this case it gets any. QueryBuilder.java looks if the client asked for specific columns, and try map those to the projections.

However, if I request at least one valid column, Ex.:
http://localhost:8080/cities?c=name&c=president&c=governor

It brings only the valid(name) column. It looks inconsistent to me and could confuse the clients that would expects all the fields they requested.

My suggestion is to match the number of columns asked and the number of projections generated.

Question, should I look any other features for the same behavior?