ALTER TABLE `kx_store_product`
    MODIFY COLUMN `image` varchar(2000) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '商品图片' AFTER `mer_id`;

ALTER TABLE `kx_store_product_attr_value`
    MODIFY COLUMN `image` varchar(2000) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '图片' AFTER `price`;

ALTER TABLE `kx_store_category`
    MODIFY COLUMN `pic` varchar(2000) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT '' COMMENT '图标' AFTER `sort`;