```json { "action": "final", "content": "Based on the dataset's schema, here are the columns in the `semi_conductor_se` table, their data types, and their meanings:\n\n### Core Financial Data\n* **`company_name`** (`VARCHAR`): The name of the semiconductor company (e.g., ACM Research, u-blox).\n* **`stock_name`** (`VARCHAR`): The stock ticker symbol or identifier used on the exchange (e.g., `000660.KS`, `XPER`).\n* **`date`** (`DATE`): The trading date for the recorded prices and volume (ranging from January 2, 2012, to August 4, 2025).\n* **`open`** (`DOUBLE`): The opening price of the stock at the start of the trading day.\n* **`high`** (`DOUBLE`): The highest price the stock reached during the trading day.\n* **`low`** (`DOUBLE`): The lowest price the stock fell to during the trading day.\n* **`close`** (`DOUBLE`): The closing price of the stock at the end of the trading day.\n* **`volume`** (`BIGINT`): The total number of shares traded during that day.\n\n### System & Metadata Columns\n* **`_unnamed_0`** (`BIGINT`): An auto-generated row index or identifier from the source file.\n* **`_ingestion_timestamp`** (`TIMESTAMP`): The exact date and time when this data was loaded into the system.\n* **`_batch_id`** (`VARCHAR`): An internal identifier for the batch process that loaded the data.\n* **`_source_file`** (`VARCHAR`): The file path of the original CSV file from which the data was extracted.\n* **`_source_system`** (`VARCHAR`): The system or method used to ingest the data (e.g., `api`)." } ```