select goods_id ,concat (",",GROUP_CONCAT(optiona_id),",") from `lux_product_goods_property_val` group by goods_id
MySQL group by后的结果将每组某VARCHAR字段字符串连接起来

select goods_id ,concat (",",GROUP_CONCAT(optiona_id),",") from `lux_product_goods_property_val` group by goods_id