{
  "partition_columns": [
    {
      "name": "trade_date",
      "type": "string",
      "source": "Hive path"
    },
    {
      "name": "code_prefix",
      "type": "string",
      "source": "Hive path, ticker[:2]"
    }
  ],
  "columns": [
    {
      "name": "ticker",
      "type": "string",
      "description": "Six-digit ticker code, preserving leading zeroes."
    },
    {
      "name": "time_s",
      "type": "int32",
      "description": "Seconds since midnight."
    },
    {
      "name": "tran_id",
      "type": "int64",
      "description": "Transaction id."
    },
    {
      "name": "price_x10000",
      "type": "int64",
      "description": "Trade price multiplied by 10000."
    },
    {
      "name": "volume",
      "type": "int64",
      "description": "Trade volume."
    },
    {
      "name": "sale_order_volume",
      "type": "int64",
      "description": "Remaining sell order volume."
    },
    {
      "name": "buy_order_volume",
      "type": "int64",
      "description": "Remaining buy order volume."
    },
    {
      "name": "side",
      "type": "string",
      "description": "Trade side from source Type column, usually B or S."
    },
    {
      "name": "sale_order_id",
      "type": "int64",
      "description": "Sell order id."
    },
    {
      "name": "sale_order_price_x10000",
      "type": "int64",
      "description": "Sell order price multiplied by 10000."
    },
    {
      "name": "buy_order_id",
      "type": "int64",
      "description": "Buy order id."
    },
    {
      "name": "buy_order_price_x10000",
      "type": "int64",
      "description": "Buy order price multiplied by 10000."
    }
  ],
  "sort_order": [
    "ticker",
    "time_s",
    "tran_id"
  ],
  "compression": "zstd",
  "row_group_size_rows": 2000000,
  "row_groups_per_file": 15,
  "target_file_size": "300MB-800MB when row distribution allows it",
  "generated_at": "2026-08-07T12:53:27+00:00"
}