ah, pensavo fossi un mago di Excel

fatti allora ispirare da questo
codice:
SELECT 	T1.*, T2.*
FROM 
	(SELECT 't1' as src, cli, concat(nome,cognome) as name FROM Table1) AS T1
	LEFT JOIN
	(SELECT 't2' as src, cli, concat(nome,cognome) as name FROM Table2) AS T2
	ON T1.cli=T2.cli AND T1.name=T2.name
WHERE 
	T2.src IS NULL
;


SELECT 
	T2.*, T1.*
FROM 
	(SELECT 't2' as src, cli, concat(nome,cognome) as name FROM Table2) AS T2
	LEFT JOIN
	(SELECT 't1' as src, cli, concat(nome,cognome) as name FROM Table1) AS T1
	ON T2.cli=T1.cli AND T2.name=T1.name
WHERE 
	T1.src IS NULL
lo puoi testare qui https://www.db-fiddle.com/f/rbQvMuyGtpE7qV7rH1oZDY/2