Master Data Linking with n8n's itemMatching() Function
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Unlock the power of data relationships within your n8n workflows. This example demonstrates how to use the `itemMatching()` function in the Code node to dynamically link and retrieve related data from earlier workflow steps, enhancing your automation capabilities.
About This Workflow
This n8n workflow showcases the practical application of the itemMatching() function, a powerful tool within the Code node for sophisticated data manipulation. By enabling you to access and correlate data from preceding nodes based on specific indices, itemMatching() allows for dynamic data enrichment and transformation. This example illustrates fetching customer data, selectively editing it, and then re-introducing specific fields like email addresses by matching them to their original source, all executed through concise code.
This example is designed to help you understand how to build more intelligent automations that can understand and leverage the context of previously processed data. Whether you're dealing with complex datasets or need to perform intricate lookups, itemMatching() provides a flexible and efficient solution.
Key Features
- Dynamic Data Referencing: Access and link data from earlier workflow steps based on item index.
- Enhanced Data Enrichment: Dynamically add contextual information to your data payload.
- Flexible Code Integration: Leverage JavaScript or Python within the Code node for precise data control.
- Streamlined Workflows: Build more intelligent and context-aware automation sequences.
How To Use
- Trigger the Workflow: Click the "Execute Workflow" button to initiate the process.
- Fetch Initial Data: The "Customer Datastore (n8n training)" node retrieves all customer records.
- Prepare Data (Optional): The "Edit Fields" node demonstrates how to manipulate or filter existing data if needed. In this example, it preserves the 'name' field.
- Apply
itemMatching(): In the "Code" node, use theitemMatching()function to access theemailfrom the "Customer Datastore (n8n training)" node (referenced by its indexi) and assign it to a new fieldrestoreEmail. - Return Enriched Data: The workflow outputs the updated data with the restored email addresses.
Apps Used
Workflow JSON
{
"id": "3885c5b5-6948-47bb-9f38-4c3dd79801b0",
"name": "Master Data Linking with n8n's itemMatching() Function",
"nodes": 5,
"category": "DevOps",
"status": "active",
"version": "1.0.0"
}Note: This is a sample preview. The full workflow JSON contains node configurations, credentials placeholders, and execution logic.
Get This Workflow
ID: 3885c5b5-6948...
About the Author
Crypto_Watcher
Web3 Developer
Automated trading bots and blockchain monitoring workflows.
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