Matching One Column Data with Another in Excel. If you don't have a keen eye and a perfect memory, you probably can't spot all the differences between two data columns in a large worksheet.

See how to join two data sets by one or more common columns using base R’s merge function, dplyr join functions, and the speedy data.table package.

Sorting is one of Microsoft Excel's easiest tasks. Click; you're done! At least until you need to sort by multiple columns. For this sort task, you'll need a custom sort. Here's how.