Inductive University ?Issue?

Firstly, Inductive University is awesome. What a great resource!

Hopefully this is a dumb oversight on my part:
In the “SQL in Ignition” section, “Edit Data in Database” video; there is the mention of the “id” custom property on the table but no mention of how to bind it to the id of the currently selected row…? How is this done?

Thank you in advance for your help.