{
  "fields": [
    {
      "name": "start_day",
      "type": "date",
      "title": "START_DAY",
      "format": "%d/%m/%Y"
    },
    {
      "name": "end_day",
      "type": "date",
      "title": "END_DAY",
      "format": "%d/%m/%Y"
    }
  ],
  "missingValues": [
    ""
  ],
  "primaryKey": [
    "start_day"
  ]
}