Class: GroupingOperation

An operation that groups source rows prior to aggregation.

URI: [linkmlmap:class/GroupingOperation](https://w3id.org/linkml/transformer/class/GroupingOperation) 
 classDiagram
    class GroupingOperation
    click GroupingOperation href "../../classes/GroupingOperation/"
      TransformationOperation <|-- GroupingOperation
        click TransformationOperation href "../../classes/TransformationOperation/"

      GroupingOperation : null_handling





        GroupingOperation --> "0..1" InvalidValueHandlingStrategy : null_handling
        click InvalidValueHandlingStrategy href "../../enums/InvalidValueHandlingStrategy/"
## Inheritance * [TransformationOperation](../classes/TransformationOperation.md) * **GroupingOperation** ## Slots | Name | Cardinality and Range | Description | Inheritance | | --- | --- | --- | --- | | [null_handling](../slots/null_handling.md) | 0..1
[InvalidValueHandlingStrategy](../enums/InvalidValueHandlingStrategy.md) | How to handle null values when grouping | direct | ## Identifier and Mapping Information ### Schema Source * from schema: https://w3id.org/linkml/transformer ## Mappings | Mapping Type | Mapped Value | | --- | --- | | self | linkmlmap:GroupingOperation | | native | linkmlmap:GroupingOperation | ## LinkML Source ### Direct 
name: GroupingOperation
description: An operation that groups source rows prior to aggregation.
from_schema: https://w3id.org/linkml/transformer
is_a: TransformationOperation
attributes:
  null_handling:
    name: null_handling
    description: How to handle null values when grouping.
    from_schema: https://w3id.org/linkml/transformer
    domain_of:
    - AggregationOperation
    - GroupingOperation
    range: InvalidValueHandlingStrategy
### Induced 
name: GroupingOperation
description: An operation that groups source rows prior to aggregation.
from_schema: https://w3id.org/linkml/transformer
is_a: TransformationOperation
attributes:
  null_handling:
    name: null_handling
    description: How to handle null values when grouping.
    from_schema: https://w3id.org/linkml/transformer
    owner: GroupingOperation
    domain_of:
    - AggregationOperation
    - GroupingOperation
    range: InvalidValueHandlingStrategy