I need take player playtime and place in my api, but i dont find where is playtime

[ClonerNotFound]

I am creating an API for my server and using plan. I need it to create player cards on the site, which contain some information, such as: nickname, registration date and amount of game time. After a long search where the amount of time played by a player can be, I realized that it is not there, although this information is on the plan site. Where in the database can I find this game time?

[AuroraLS3]

SUM(session_end-session_start) FROM plan_sessions