But when that data includes a column with fairly long entries, that column may not fit well in a table the width of your screen. This can be especially tricky when not every row includes the very ...

Make your R data.table code more efficient and elegant with these special symbols and operators. Plus, learn about the new fcase() function R data.table code becomes more efficient — and elegant ...

This column shows how to use the Data Table option in Excel’s What-If Analysis tool.

Prevent duplicates before they happen by combining a simple function with data validation.