Summary  
Demonstrates using an AI code assistant to automatically generate relational lookup formulas that match key fields and populate missing data across two data tables.

General domain of usage  
Inventory management


Your dataset still has missing information. Product Name and Unit Price are not in the Order Log, but they exist in the Catalogue sheet.

To complete the data, you need to connect both sheets using the SKU Code.




Instead of writing formulas manually, describe the task to Copilot.

Explain that you want to fill Product Name and Unit Price using data from another sheet, and that SKU Code is the shared field.

Copilot identifies the relationship, selects the correct function, and inserts the formulas into the table.

Use Copilot to Build the Lookup


After running the task, check the filled columns.

Some rows may show errors if the SKU does not exist in the Catalogue. This is expected and confirms that the lookup is working correctly.

Review the Result


You can review the formula directly in Excel or ask Copilot to explain it.

This helps you understand how the lookup works without needing to memorize the syntax.

Understand the Formula

Discover how to use Excel with Copilot to solve real business problems. Explore practical workflows that turn messy data into structured, reliable systems. Learn how to build models, automate calculations, and generate insights without memorizing formulas. Understand how to guide Copilot, validate its output, and keep full control over your logic.

Explore the core setup and habits for working with Copilot in Excel. You configure your environment, learn how to write clear prompts, and apply safe workflows before using Copilot on real data. You focus on testing, verifying results, and protecting your files. These skills help you avoid mistakes and use Copilot with confidence further.

Focus on turning messy, inconsistent datasets into clean and usable data. You standardize headers, split combined fields, fix mixed formats, and remove duplicates using Copilot. Consider real-world scenarios and apply structured workflows to clean data safely.

Discover using Copilot to work with clean data and turn it into insights. You extract values, connect multiple datasets, handle errors, and build dynamic summaries. Learn to describe tasks in plain language while Copilot generates and applies the formulas.

Learn how to present data in a clear and interactive way. Create PivotTables, add slicers, build charts, and apply conditional formatting to highlight key insights. Combine all elements into a structured dashboard and use Copilot to support analysis, formatting, and presentation. 

Build a forecasting model using assumptions, pricing scenarios, and 12-month projections. Test different outcomes, guide Copilot through complex logic, and turn your analysis into a clear, decision-ready recommendation.

Turn your work into a reusable, product-like spreadsheet. Clean raw data, combine multiple sources into a single system, build automated reports, and package everything into a polished template with instructions that anyone can use.

Build a Lookup Column End-to-End