> ## Documentation Index
> Fetch the complete documentation index at: https://docs.superoffice.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Enum values for SelectionUnionType

> Lists the enum values for SelectionUnionType.

## SelectionUnionType Enum

How should the inputs of a combined selection be combined

| Name                  | Value | Description                                                |
| --------------------- | ----- | ---------------------------------------------------------- |
| Unknown               | 0     | Combination type is unknown/indefined                      |
| SubtractRightFromLeft | 1     | All of left, except where it overlaps with right           |
| SubtractLeftFromRight | 2     | All of right, except where it overlaps with left           |
| Intersect             | 3     | Those present in left AND right only                       |
| XOR                   | 4     | Those present in left or right, but not both               |
| Union                 | 5     | All, but no duplicates for those present in left and right |

## Usage

* [selection](../selection).combinationType - Selections


## Related topics

- [Enum SelectionUnionType](/en/automation/crmscript/reference/CRMScript.NetServer.SelectionUnionType.md)
- [SuperOffice.WebApi.Data.SelectionUnionType](/en/api/reference/webapi/SuperOffice.WebApi.Data.SelectionUnionType.md)
- [SuperOffice.WebApi.Data.SelectionEntity](/en/api/reference/webapi/SuperOffice.WebApi.Data.SelectionEntity.md)
- [Enum values for SelectionSystemType](/en/database/tables/enums/selectionsystemtype.md)
- [selectionuniontype](/en/api/mdo-providers/reference/selectionuniontype.md)
- [NSSelectionEntity](/en/automation/crmscript/reference/CRMScript.NetServer.NSSelectionEntity.md)