delete from mall_goods_sku where goods_id = #{id}
delete from mall_goods_sku
where id in
#{item}
update mall_goods_sku
set stock = stock - #{cnt},
sku_volume = sku_volume + #{cnt}
where id=#{id} and stock - #{cnt} = ]]> 0
update mall_goods_sku
set stock = stock + #{cnt},
sku_volume = sku_volume - #{cnt}
where id=#{id} and sku_volume - #{cnt} = ]]> 0