{
  "db_name": "PostgreSQL",
  "query": "\n        SELECT symbol, trade_date, open_price, high_price, low_price, close_price, volume, pe, pb, total_mv\n        FROM daily_market_data\n        WHERE symbol = $1\n          AND ($2::DATE IS NULL OR trade_date >= $2)\n          AND ($3::DATE IS NULL OR trade_date <= $3)\n        ORDER BY trade_date DESC\n        ",
  "describe": {
    "columns": [
      {
        "ordinal": 0,
        "name": "symbol",
        "type_info": "Varchar"
      },
      {
        "ordinal": 1,
        "name": "trade_date",
        "type_info": "Date"
      },
      {
        "ordinal": 2,
        "name": "open_price",
        "type_info": "Numeric"
      },
      {
        "ordinal": 3,
        "name": "high_price",
        "type_info": "Numeric"
      },
      {
        "ordinal": 4,
        "name": "low_price",
        "type_info": "Numeric"
      },
      {
        "ordinal": 5,
        "name": "close_price",
        "type_info": "Numeric"
      },
      {
        "ordinal": 6,
        "name": "volume",
        "type_info": "Int8"
      },
      {
        "ordinal": 7,
        "name": "pe",
        "type_info": "Numeric"
      },
      {
        "ordinal": 8,
        "name": "pb",
        "type_info": "Numeric"
      },
      {
        "ordinal": 9,
        "name": "total_mv",
        "type_info": "Numeric"
      }
    ],
    "parameters": {
      "Left": [
        "Text",
        "Date",
        "Date"
      ]
    },
    "nullable": [
      false,
      false,
      true,
      true,
      true,
      true,
      true,
      true,
      true,
      true
    ]
  },
  "hash": "a487a815febf42b5c58fce44382f2d849f81b5831e733fc1d8faa62196f67dc9"
}