MapReduceOutputMode Enumeration (original) (raw)
Represents the map-reduce output mode.
Namespace: MongoDB.Driver.Core.Operations
Assembly: MongoDB.Driver.Core (in MongoDB.Driver.Core.dll) Version: 2.10.0+569905ff5e778c38ea19d9d0392496a83e1704ed
Syntax
public enum MapReduceOutputMode
Public Enumeration MapReduceOutputMode
Members
| | Member name | Value | Description | | ------------- | ----- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | Replace | 0 | The output of the map-reduce operation replaces the output collection. | | Merge | 1 | The output of the map-reduce operation is merged with the output collection. If an existing document has the same key as the new result, overwrite the existing document. | | Reduce | 2 | The output of the map-reduce operation is merged with the output collection. If an existing document has the same key as the new result, apply the reduce function to both the new and the existing documents and overwrite the existing document with the result. |
See Also