how to get the list of keys in a Parse.com query?

Question

Is there any option to get only the list of existing keys instead of getting all of them in a query?

i'm using PFQueryTableViewController to build my Table View

i have a Parse.com class that contains list of keys which can duplicate themselves

need to build table view that show only the list of unique keys from that class

can i do that using parse querying methods while overriding func queryForTable() -> PFQuery

Using swift for ios

Answer 1

Here you can find documentation: Basic Queries