A Database Error Occurred

Error Number: 1267

Illegal mix of collations (cp1251_general_ci,IMPLICIT) and (utf8_general_ci,COERCIBLE) for operation '='

SELECT id, short_title, letter FROM (`e_article`) WHERE `letter` = '��' ORDER BY `short_title`

Filename: /var/www/max/data/www/mosmedclinic.ru/models/encyclopedia_model.php

Line Number: 52