[^SmileY]

if you can't handle big query anyway in server changelevel or client disconnects. it is a solution for it.
Do not matter if players do a rage quit from server. Is not admin or server fault bro.

Using sqlx will never cover such situations when you use a lot of data to save or load from database.

I presume if you can use sql to save data, you can also try a plugin like hl statsx ce or psychostats that use logs to handle data, so basically you will not need to hurry about client disconnects or change levels.

I'm still have some doubt how we can save player data with efficiency and accuracy.