Using Power Query to Combine Amazon Ads CSV Files
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Quick answer
Power Query is a native Excel tool for importing, cleaning, transforming, and appending large CSV datasets without opening each file manually. For Amazon Ads exports, it is especially useful when reports arrive in fragments by date, campaign, or marketplace. You can build one query that combines files from a folder, removes empty rows, aligns column names, and refreshes with new exports.
For most advertisers managing multiple Amazon Ads CSV files, Power Query is worth learning. It reduces manual copy-paste errors and makes recurring report consolidation much faster. The key is setting up a folder-based query once, then letting Excel do the append and cleanup work.
What Power Query changes in an Amazon Ads workflow
Power Query moves Amazon Ads CSV merging out of manual copy-paste steps. Instead of opening every export, copying rows, and pasting them into a master sheet, you point the query at a folder. It can combine identically structured files into one table. That works well for Amazon Ads search term, campaign, and targeting reports that share columns but arrive as separate daily or weekly files.
You can also remove empty rows, fix data types, and filter irrelevant records before the data reaches Excel. This leaves a cleaner table for pivot tables, VLOOKUP, or SUMIFS work. If manual folder setups still feel heavy, tools like Amazon Ads Report Analyzer can automate imports, but Power Query remains a solid in-Excel option.
Where Power Query is most worth it
Power Query pays off when reports have consistent structure and you need to refresh the same merge on a schedule. It is less ideal for one-off files with wildly different column layouts, because you may spend more time fixing metadata than you save.
- Multiple files from the same Amazon Ads report type
- Daily or weekly recurring exports
- Large files that slow down manual copy-paste
- Need for repeatable cleanup steps before analysis
When this matters
This decision matters most when you are preparing weekly performance reviews or client updates. Manually combining dozens of Amazon Ads CSVs can introduce row duplication and misaligned columns. Power Query reduces those risks because every refresh follows the same imported steps, and you can inspect each query stage before output.
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Related guides
Power Query is one of several ways to combine Amazon Ads CSV exports. If you want to compare it with other Excel methods, start with the main guide on how to combine multiple Amazon Ads CSV exports in Excel to choose the fastest setup for your reports.