mysql创建数据库表

CREATE TABLE `product_info` (
    `product_id` VARCHAR() NOT NULL,
    `product_name` VARCHAR() NOT NULL COMMENT '商品名称',
    `product_price` DECIMAL(,) NOT NULL COMMENT '单价',
    `product_stock` INT NOT NULL COMMENT '库存',
    `product_description` VARCHAR() COMMENT '描述',
    `product_icon` VARCHAR() COMMENT '小图',
    `category_type` INT NOT NULL COMMENT '类目编号',
    `create_time` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
    `update_time` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '修改时间',
    PRIMARY KEY (`product_id`)
) COMMENT '商品表';
CREATE TABLE `product_cate` (
    `category_id` INT NOT NULL AUTO_INCREMENT,
    `category_name` VARCHAR() NOT NULL COMMENT '类目名字',
    `category_type` INT NOT NULL COMMENT '类目编号',
    `create_time` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
    `update_time` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '修改时间',
    PRIMARY KEY (`category_id`),
    UNIQUE KEY `uqe_category_type` (`category_type`)
) COMMENT '类目表';
CREATE TABLE `order_master` (
    `order_id` VARCHAR() NOT NULL,
    `buyer_name` VARCHAR() NOT NULL COMMENT '买家名字',
    `buyer_phone` VARCHAR() NOT NULL COMMENT '买家电话',
    `buyer_address` VARCHAR() NOT NULL COMMENT '买家地址',
    `buyer_openid` VARCHAR() NOT NULL COMMENT '买家微信的openid',
    `order_amount` DECIMAL(,) NOT NULL COMMENT '订单总金额',
    `order_status` TINYINT() NOT NULL DEFAULT '' COMMENT '订单状态，默认0新订单',
    `pay_status` TINYINT() NOT NULL DEFAULT '' COMMENT '支付状态,默认0未支付',
    `create_time` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
    `update_time` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '修改时间',
    PRIMARY KEY (`order_id`),
    KEY `idx_buyer_openid` (`buyer_openid`)
) COMMENT '订单表';
CREATE TABLE `order_detail` (
    `detail_id` VARCHAR() NOT NULL,
    `order_id` VARCHAR() NOT NULL,
    `product_id` VARCHAR() NOT NULL,
    `product_name` VARCHAR() NOT NULL COMMENT '商品名称',
    `product_price` DECIMAL(,) NOT NULL COMMENT '商品价格',
    `product_quantity` INT NOT NULL COMMENT '商品数量',
    `product_icon` VARCHAR() COMMENT '商品小图',
    `create_time` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
    `update_time` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '修改时间',
    PRIMARY KEY (`detail_id`),
    KEY `idx_order_id` (`order_id`)
) COMMENT '订单详情表';