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

# Set Functions

> This article lists all set functions supported by the YiDA platform, including DIFFERENCESET, INTERSECTIONSET, SUBSET, and UNIONSET, used to calculate the difference, intersection, subset, and union of sets.

Refer to the table below for the syntax and links to detailed usage of each function.

## Function Overview

| **Function name**                            | **Description**                                                |
| -------------------------------------------- | -------------------------------------------------------------- |
| [DIFFERENCESET](/yida/form/ewow48u8pg6wde0y) | Calculate the difference of two sets.                          |
| [INTERSECTIONSET](/yida/form/ah8b9z)         | Calculate the intersection of two sets.                        |
| [SUBSET](/yida/form/ad122fe2ufqbog42)        | Determine whether the second set is a subset of the first set. |
| [UNIONSET](/yida/form/ddsy93l7tdtf3s9s)      | Calculate the union of two sets.                               |