db->query("ALTER TABLE dxcc_entities CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;"); $this->db->query("ALTER TABLE dxcc_exceptions CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;"); $this->db->query("ALTER TABLE dxcc_prefixes CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;"); } public function down() { } }