asterixdb/asterix-app/data/misc/1.adm

{"id": 1, "int_f": 1   , "str_f": "1"}
{"id": 2, "int_f": null, "str_f": "2"}
{"id": 3               , "str_f": "3"}
{"id": 4, "int_f": 4   , "str_f": null}
{"id": 5, "int_f": 5                 }
{"id": 6, "int_f": null              }
{"id": 7               , "str_f": null}
{"id": 8, "int_f": null, "str_f": null}
{"id": 9                               ,"other_f": "other" }