Aggregate key model — pre-aggregates rows sharing the same key columns.
| Name | Type | Description | Notes |
|---|---|---|---|
| type | str | defaults to "aggregate" | |
| columns | [str] | Key columns. Defaults to first inferred column. | [optional] |
| any string name | bool, date, datetime, dict, float, int, list, str, none_type | any string name can be used but the value must be the correct type | [optional] |