{
  "db_name": "PostgreSQL",
  "query": "SELECT DISTINCT date, canteen FROM MEALS WHERE date >= $1 AND date <= $2",
  "describe": {
    "columns": [
      {
        "ordinal": 0,
        "name": "date",
        "type_info": "Date"
      },
      {
        "ordinal": 1,
        "name": "canteen",
        "type_info": "Text"
      }
    ],
    "parameters": {
      "Left": [
        "Date",
        "Date"
      ]
    },
    "nullable": [
      false,
      false
    ]
  },
  "hash": "b94a6b49fb5e53e361da7a890dd5f62d467293454b01175939e32339ee90fd23"
}