There may be different solutions, depending on what kind of database you're talking about. As Haddood says, currently there's no such thing as a multi-column payload.
But let's imagine you have a group of 3 different commands:
What is name's phone number?
What is name's favourite sport?
What is name's birthday?
Each command has its own payload xml (phone.xml ; sport.xml ; birthday.xml), associating your list of contact names (as the phrase) with the relevant info (as the value).
So, let's say you already have a spreadsheet with all the above info, you can copy and paste the two relevant columns directly into a blank payload xml file.
Create your command.
Create a new value>phrase payload.
When you open the new, empty payload xml table, you can right-click on the top, leftmost cell and you will have the option to "paste rows from clipboard". So select the 2 columns you need from your spreadsheet, and paste them into your payload xml file. Save.
Do the same for your other commands.
It's not ideal for data that is changing regularly, but for more static information it is probably the easiest non-programmatic option.