code review：商品评论

sql/mysql/product_comment.sql

@@ -1,14 +0,0 @@
--- 1.冗余 SKU 图片地址, 规格
-alter table product_comment
-    add column sku_pic_url varchar(256) not null comment '图片地址' after sku_id;
-
-alter table product_comment
-    add column sku_properties varchar(512) null
-        comment '属性数组，JSON 格式 [{propertId: , valueId: }, {propertId: , valueId: }]' after sku_pic_url;
-
--- 2.修复已有数据
-update product_comment pc
-    join product_sku ps on pc.spu_id = ps.spu_id
-set pc.sku_pic_url    = ps.pic_url,
-    pc.sku_properties = ps.properties
-where pc.sku_id is not null;