This tutorial shows how to update an existing Excel workbook automatically without relying on desktop Excel. Use it when the workbook layout already exists and the ETL job only needs to refresh the data.
What You Will Learn
- Update an existing Excel file from an automated workflow.
- Preserve workbook structure while replacing or appending data.
- Choose where new data should be written in the sheet, table, or range.
- Check file and sheet settings before scheduling repeat updates.
Before You Start
Open the sample workflow or prepare a small test file before applying the pattern to production data. It is easier to fix a test file than a Monday morning reporting run.
Excel Writer Docs For Existing Workbooks
Updating an existing Excel file is the right approach when the workbook already contains the layout, formulas, formatting, or sheets people expect. Rebuilding it from scratch every time is possible, but so is making tea in a saucepan. Better options exist.
The Excel Writer documentation explains adding or updating an existing Excel file, working with Excel sheets, and working with Excel ranges.
If the workbook includes formulas or named tables, also check formula handling, Excel tables and ranges, and the Excel Writer notes.
Need Advanced ETL Processor First?
Download the Advanced ETL Processor trial before following the tutorial, or review Enterprise if you need scheduled unattended execution.