ALTER TABLE sps_vouchers ADD vehicle_type_ids TEXT NULL;
ALTER TABLE sps_vouchers CHANGE vehicle_type_ids vehicle_type_ids text CHARACTER SET utf8 COLLATE utf8_general_ci NULL AFTER expiry_date;
ALTER TABLE sps_vouchers ADD batch_number VARCHAR(255) NULL AFTER `status`;
ALTER TABLE sps_vouchers ADD INDEX idx_batch_status (batch_number, status);
