SELECT id, haslo, znaczenie, data FROM sennik WHERE  (haslo LIKE 'Z%' OR haslo LIKE 'z%' OR haslo LIKE '¯%' OR haslo LIKE '¿%' OR haslo LIKE '¬%' OR haslo LIKE '¼%' ) ORDER BY haslo ASC

Illegal mix of collations (latin2_general_ci,IMPLICIT) and (utf8_unicode_ci,COERCIBLE) for operation 'like'