How to find if character gets inserted to Workspace?

I would like to create a server script which would detect whenever a player spawns and its character is inserted into Workspace, however without knowing the object player.

Something like:

game.Workspace.CharacterAdded:connect(function(character)
	--Do some complex stuff
end)

First off, is it possible to have the Workspace detect the spawning of a player without knowing the player?

game.Players.LocalPlayer.CharacterAdded:connect(function(character)
    --Do some complex stuff
end)
--for local script