{
  "db_name": "PostgreSQL",
  "query": "SELECT * FROM waterdata WHERE date >= $1 AND date <= $2",
  "describe": {
    "columns": [
      {
        "ordinal": 0,
        "name": "date",
        "type_info": "Date"
      },
      {
        "ordinal": 1,
        "name": "water_level",
        "type_info": "Float8"
      },
      {
        "ordinal": 2,
        "name": "surface_area",
        "type_info": "Float8"
      },
      {
        "ordinal": 3,
        "name": "reservoir_storage",
        "type_info": "Float8"
      },
      {
        "ordinal": 4,
        "name": "conservation_storage",
        "type_info": "Float8"
      },
      {
        "ordinal": 5,
        "name": "percent_full",
        "type_info": "Float8"
      },
      {
        "ordinal": 6,
        "name": "conservation_capacity",
        "type_info": "Float8"
      },
      {
        "ordinal": 7,
        "name": "dead_pool_capacity",
        "type_info": "Float8"
      }
    ],
    "parameters": {
      "Left": [
        "Date",
        "Date"
      ]
    },
    "nullable": [
      false,
      true,
      true,
      false,
      false,
      false,
      true,
      false
    ]
  },
  "hash": "41cb1be73feeefaaa067a45df4d52d5de5aaee42a3ab7faefe989d3fbc5dc84b"
}