{
  "db_name": "PostgreSQL",
  "query": "SELECT symbol, class as \"class: Class\", exchange as \"exchange: Exchange\", trading, timestamp_added, timestamp_first, timestamp_last FROM assets WHERE class = $1::CLASS",
  "describe": {
    "columns": [
      {
        "ordinal": 0,
        "name": "symbol",
        "type_info": "Text"
      },
      {
        "ordinal": 1,
        "name": "class: Class",
        "type_info": {
          "Custom": {
            "name": "class",
            "kind": {
              "Enum": [
                "us_equity",
                "crypto"
              ]
            }
          }
        }
      },
      {
        "ordinal": 2,
        "name": "exchange: Exchange",
        "type_info": {
          "Custom": {
            "name": "exchange",
            "kind": {
              "Enum": [
                "AMEX",
                "ARCA",
                "BATS",
                "NASDAQ",
                "NYSE",
                "NYSEARCA",
                "OTC",
                "CRYPTO"
              ]
            }
          }
        }
      },
      {
        "ordinal": 3,
        "name": "trading",
        "type_info": "Bool"
      },
      {
        "ordinal": 4,
        "name": "timestamp_added",
        "type_info": "Timestamptz"
      },
      {
        "ordinal": 5,
        "name": "timestamp_first",
        "type_info": "Timestamptz"
      },
      {
        "ordinal": 6,
        "name": "timestamp_last",
        "type_info": "Timestamptz"
      }
    ],
    "parameters": {
      "Left": [
        {
          "Custom": {
            "name": "class",
            "kind": {
              "Enum": [
                "us_equity",
                "crypto"
              ]
            }
          }
        }
      ]
    },
    "nullable": [
      false,
      false,
      false,
      false,
      false,
      false,
      false
    ]
  },
  "hash": "9d1121766d12528f51b3352d2fe857e73ae69df9152ece55a8569698a5b13f8b"
}