| Column Name | Data Type | Description |
|---|---|---|
| column_name | Inherited from input table | Name of input column (column_name) or column range (start_column_end_column) for which the approximate distinct count was computed. |
| cnt | INTEGER | Approximate distinct count. |
| method | VARCHAR | Method used for calculating the approximate distinct count—'approx' (Flajolet-Martin algorithm) or 'nearExact' (counting). |