Frage zu MySQL (Scripting)

addEvent("onRegister",true)
addEvent("onLogin",true)


function resourceStart ()
	handler = dbConnect("mysql","dbname=YOURDATABASE;host=YOURHOSTNAME","YOURUSERNAME","YOURPASSWORD")
	if handler then
		outputServerLog("[Login] connection to the database successfully!")
	else
		outputServerLog("[Login] connection to the database fails!")
	end
end
addEventHandler("onResourceStart",getResourceRootElement(),resourceStart) 


function onRegister( Username , Password )
	local sql = dbQuery(handler,"SELECT * FROM user WHERE Username = '"..Username.."'")
	local result,num_rows = dbPoll(sql,-1)
	if num_rows == 0 then
	local Passwordverschluesselt = md5(Password)
		dbExec(handler,"INSERT INTO user (Username, Password) VALUES ( '"..Username.."','"..Passwordverschluesselt.."')")
		outputChatBox("you have logged in successfully!",source,125,0,0)
	else
		outputChatBox("ERROR: You're already registered!",source,125,0,0)
	end
end
addEventHandler("onRegister",getRootElement(),onRegister)


function onLogin ( Username , Password )
	local Passwortverschluesselt = md5(Password)
	local sql = dbQuery(handler,"SELECT * FROM user WHERE Username = '"..Username.."' AND Password = '"..Passwortverschluesselt.."'")
	local result,num_rows = dbPoll(sql,-1)
	if num_rows == 1 then
		outputChatBox("you have logged in successfully",source,125,0,0)
		triggerClientEvent(source,"closeLogin",source)
	else
		outputChatBox("ERROR: Your Password or user name is incorrect!!",source,125,0,0)
	end
end
addEventHandler("onLogin",getRootElement(),onLogin)