select length(encrypt('foo', 'ff')) <> 0;
length(encrypt('foo', 'ff')) <> 0
1
select old_password('test'),length(password("1")),length(encrypt('test')),encrypt('test','aa');
old_password('test')	length(password("1"))	length(encrypt('test'))	encrypt('test','aa')
378b243e220ca493	45	13	aaqPiZY5xR5l.