Transforming and cleaning data

Introduction to Workflow Automation with n8n

Frank Nillard

Founder, Tellyt.ai

Why transformation matters

• Example: [email protected]

• Example: [email protected]

Fields and values

 

Field name: email 

Value: [email protected].

 

• All data in n8n is organized into fields.
• Each field has a name and a value.
• This name-value structure appears in nearly all nodes.

Static vs. dynamic values

Static vs. dynamic values

Static vs. dynamic values

What are expressions?

DEMO VIDEO

Mixing static and dynamic values

DEMO VIDEO

Set node: quick fixes with expressions

DEMO VIDEO

Code node: when it gets more complex

DEMO VIDEO

Set vs Code: when to use which

• Use a Set node for simple changes.

Set vs Code: when to use which

• Use a Set node for simple changes.
• Use a Code node for complex or multi-field edits.
  • more efficient than using multiple nodes.

Let's practice!

Introduction to Workflow Automation with n8n