To do Alt + H D Q on Mac in Excel, download and install Accelerator Keys, then press Option, followed by H, D, and Q.
Command: Delete Table Columns
This is how to do Alt + H D Q on Mac in Excel with Accelerator Keys, the native ribbon and alt key shortcut solution for Mac users who get more done with Excel.
Alt + H D Q deletes the selected table columns when your cursor is within an Excel Table. This removes entire columns from the table structure while keeping the rest of the table intact.