How to Join Two Columns in Excel. When you're setting up a Microsoft Excel spreadsheet to build an employee directory, calculate product margins or project sales, you may run into circumstances in ...

Concatenate merges the data you have inserted into columns into its own cell or column in Excel. Let’s take a look at how to use concatenate in Excel.

Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement.