Using the merge node - merge by key

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Important notice

This workflow is provided as-is. Please review and test before using in production.

1. Workflow Overview

This is an example of how you can make Merge by Key work. The “Data 1” and “Data 2” nodes simply provide mock data. You can replace them with your own data sources. Then the “Convert Data” nodes ar...

Best for

Engineering automation workflows
intermediate n8n builders looking for reusable templates

Tools used

n8n-nodes-base.function, n8n-nodes-base.merge

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by mike.

Original n8n.io source

1.1 Workflow description

Title: Using the merge node - merge by key
Workflow name: Using the merge node - merge by key

This is an example of how you can make Merge by Key work.

The “Data 1” and “Data 2” nodes simply provide mock data. You can replace them with your own data sources. Then the “Convert Data” nodes are important. They make sure that the different array items are actually different items in n8n. After that, you have then the merge with the merged data.

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - Data 1

Type / Role: n8n-nodes-base.function - function
Config choices: Version 1

Block 2 - Data 2

Type / Role: n8n-nodes-base.function - function
Config choices: Version 1

Block 3 - Convert Data 1

Type / Role: n8n-nodes-base.function - function
Config choices: Version 1

Block 4 - Convert Data 2

Type / Role: n8n-nodes-base.function - function
Config choices: Version 1

Block 5 - Merge

Type / Role: n8n-nodes-base.merge - merge
Config choices: Version 1

3. Summary Table

Workflow	Using the merge node - merge by key
Complexity	intermediate
Nodes	5
Categories	Engineering
Author	mike
Published	11 Oct 2019

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/100/100.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source Engineering workflows

Frequently asked questions

What does Using the merge node - merge by key do?

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your Engineering use case.

mike

2 workflows

Nodes

n8n-nodes-base.function n8n-nodes-base.merge

Complexity

intermediate

Published 11 Oct 2019

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/100/100.json

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Using the merge node - merge by key

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Data 1

Block 2 - Data 2

Block 3 - Convert Data 1

Block 4 - Convert Data 2

Block 5 - Merge

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions