In 2010, Microsoft added yet another technical term—Power Query—to Excel's long list of jargon, but it's not as complex as it sounds. In fact, once you get started, it's not too steep a ...

When you want to combine values in Microsoft Excel, instead of complex expressions or VBA, opt for Power Query – it’s fast and easy.

If your source data is in Excel and has duplicates, run Power Query to remove those duplicates before running a Word mail merge.