Opening a MySQL file on Mac requires you to have the correct software installed on your computer. The most common software for working with MySQL databases is the MySQL Workbench. To install the MySQL Workbench, you can go to their website (https://www.mysql.com/products/workbench/) and download the appropriate version for your Mac. Once you've installed the software, you can open MySQL files on your Mac by launching the MySQL Workbench and clicking File > Open > SQL Script. From there, you can select the MySQL file you want to open.