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Erro de contagem de registros: SELECT COUNT(*) FROM conteudo WHERE ( texto like '%Revis�o%' or titulo like '%Revis�o%' or resumo like '%Revis�o%' ) ORDER BY id DESC. Mysql informa: Illegal mix of collations (utf8mb4_unicode_ci,IMPLICIT) and (utf8_general_ci,COERCIBLE) for operation 'like'