select columns 错误

[victory kong]

const [{ balance, out_sum }] = await app.mysql .get('admin') .select('user_bamboo', { columns: ['balance, out_sum'], where: { user_uid: uid }, limit: 1, }); console.log(balance, out_sum);

sql: "SELECT balance, out_sumFROMuser_bambooWHEREuser_uid = 'vic' LIMIT 0, 1"

Error: ER_BAD_FIELD_ERROR: Unknown column 'balance, out_sum' in 'field list'

[victory kong]