新零售电商数据库设计（1）品类和参数表关系

产品和商品区别

iphone10就是一个产品，iphone 256g就是一个商品。SPU stand product unit 标准产品单位，描叙一个产品的各种特性。

SKU stock keeping unit 库存的计量单位，SKU是物理上不可分割的最小单元。B2C修改SKU对搜索权重影响不大，B2B修改SKU对搜索权重影响很大。

SKU如何和参数对应

如上衣品类不同参数不同，有颜色，领袖等。手机就有屏幕内存等不同参数。

采用

品类表和参数表，1vn解决每个频率参数不同问题。列如手机是品类表，内存，屏幕，cpu就是参数表。

产品表和品类表是1v1关系，产品表和商品表是1vn关系

因为没有比较好的免费ER图软件所以直接上SQL

品类表

/*
 Navicat Premium Data Transfer

 Source Server         : localhost
 Source Server Type    : MySQL
 Source Server Version : 50724
 Source Host           : localhost:3306
 Source Schema         : neti

 Target Server Type    : MySQL
 Target Server Version : 50724
 File Encoding         : 65001

 Date: 10/03/2020 08:26:17
*/

SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;

-- ----------------------------
-- Table structure for t_spec_group
-- ----------------------------
DROP TABLE IF EXISTS `t_spec_group`;
CREATE TABLE `t_spec_group`  (
  `id` int(10) UNSIGNED NOT NULL AUTO_INCREMENT COMMENT \'主键\',
  `spg_id` int(10) UNSIGNED NOT NULL COMMENT \'品类编号\',
  `name` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT \'品类名称\',
  PRIMARY KEY (`id`) USING BTREE,
  UNIQUE INDEX `unq_spg_id`(`spg_id`) USING BTREE,
  UNIQUE INDEX `unq_name`(`name`) USING BTREE,
  INDEX `idx_spg_id`(`spg_id`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 6 CHARACTER SET = utf8 COLLATE = utf8_general_ci COMMENT = \'品类表\' ROW_FORMAT = Dynamic;

-- ----------------------------
-- Records of t_spec_group
-- ----------------------------
INSERT INTO `t_spec_group` VALUES (1, 10001, \'手机\');
INSERT INTO `t_spec_group` VALUES (2, 10002, \'手机线\');
INSERT INTO `t_spec_group` VALUES (3, 10003, \'手机电池\');
INSERT INTO `t_spec_group` VALUES (4, 11001, \'液晶电视\');
INSERT INTO `t_spec_group` VALUES (5, 11002, \'投影电视\');

SET FOREIGN_KEY_CHECKS = 1;

参数表

CREATE TABLE t_spec_param(
    id INT UNSIGNED PRIMARY KEY AUTO_INCREMENT COMMENT \'主键\',
    spg_id INT UNSIGNED NOT NULL COMMENT \'品类编号\',
    spp_id INT UNSIGNED NOT NULL COMMENT \'参数编号\',
    `name` VARCHAR(200) NOT NULL COMMENT \'参数名称\',
    `numeric` BOOLEAN NOT NULL COMMENT \'是否为数字参数\',
    unit VARCHAR(200) COMMENT \'单位(量词)\',
    generic BOOLEAN NOT NULL COMMENT \'是否为通用参数\',
    searching BOOLEAN NOT NULL COMMENT \'是否用于通用搜索\',
    segements VARCHAR(500) COMMENT \'参数值\',
    is_delete BOOLEAN NOT NULL DEFAULT 0 COMMENT \'是否删除\',
    INDEX idx_spg_id(spg_id),
    INDEX idx_spp_id(spp_id)
    )COMMENT=\'参数表\';
INSERT INTO `t_spec_param` VALUES (1, 10001, 1, \'CPU\', 0, NULL, 1, 0, NULL, 0);
INSERT INTO `t_spec_param` VALUES (2, 10001, 2, \'运存\', 1, \'GB\', 1, 1, NULL, 0);
INSERT INTO `t_spec_param` VALUES (3, 10001, 3, \'内存\', 1, \'GB\', 1, 1, NULL, 0);
INSERT INTO `t_spec_param` VALUES (4, 10001, 4, \'屏幕尺寸\', 1, \'英寸\', 1, 1, NULL, 0);
INSERT INTO `t_spec_param` VALUES (5, 10001, 5, \'电池\', 1, \'毫安时\', 1, 0, NULL, 0);
INSERT INTO `t_spec_param` VALUES (6, 11001, 1, \'屏幕尺寸\', 1, \'英寸\', 1, 1, NULL, 0);
INSERT INTO `t_spec_param` VALUES (7, 11001, 2, \'长度\', 1, \'厘米\', 1, 0, NULL, 0);
INSERT INTO `t_spec_param` VALUES (8, 11001, 3, \'高度\', 1, \'厘米\', 1, 0, NULL, 0);
INSERT INTO `t_spec_param` VALUES (9, 11001, 4, \'宽度\', 1, \'厘米\', 1, 0, NULL, 0);
INSERT INTO `t_spec_param` VALUES (10, 11001, 5, \'分辨率\', 0, \'像素\', 1, 1, \'720P\\1080P\\4K\\8K\', 0);