# What is use of multi way merge?

**URL:** <https://community.automationedge.com/t/what-is-use-of-multi-way-merge/17673>\
**Category:** Process Studio\
**Tags:** ps-steps\
**Created:** [February 27, 2026, 1:14pm UTC](https://community.automationedge.com/t/what-is-use-of-multi-way-merge/17673 "2026-02-27T13:14:26Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Apoorva1312](https://avatars.discourse-cdn.com/v4/letter/a/9fc29f/32.png) [@Apoorva1312](https://community.automationedge.com/u/Apoorva1312)\
**Post date:** [February 27, 2026, 1:14pm UTC](https://community.automationedge.com/t/what-is-use-of-multi-way-merge/17673/1 "2026-02-27T13:14:26Z")

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![image](https://canada1.discourse-cdn.com/flex027/uploads/automationedge/original/2X/8/80fb7f8e07122a8116ade0abebb398949fef1a8b.png)

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<div class="post-metadata">

**Author:** ![AETrainings](https://avatars.discourse-cdn.com/v4/letter/a/2acd7d/32.png) [@AETrainings](https://community.automationedge.com/u/AETrainings)\
**Post date:** [March 7, 2026, 10:24am UTC](https://community.automationedge.com/t/what-is-use-of-multi-way-merge/17673/2 "2026-03-07T10:24:16Z")

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**Multiway Merge Join** is a step available in the **Joins Plugin for Process Studio workflows**. It is used to **join multiple data streams in a single step**.

This step supports **INNER JOIN** and **FULL OUTER JOIN** operations while merging the input streams based on common keys.

The key difference compared to **Merge Join** is:

- **Merge Join** → Can join **only two streams** at a time.

- **Multiway Merge Join** → Can join **multiple streams in one step**.

This makes **Multiway Merge Join more efficient** when working with **multiple datasets** , as it avoids the need to perform several sequential joins.