Add keys to an existing Time Series set
addKeysToTsSet(con, set_name, ts_keys, user_name = Sys.info()["user"],
tbl = "timeseries_sets", schema = "timeseries")
PostgreSQL connection
The name of the set
A character vector of keys to be added
The user name of the set's owner
Name of the time series sets table
Schema of the time series database to use