mall数据库文件
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comlibmb
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pages/mall/analytics/test/01_create_coupon_tables.sql
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pages/mall/analytics/test/01_create_coupon_tables.sql
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-- =============================================
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-- 优惠券业务基础表（最小集，用于优惠券效果分析）
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-- 说明：
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-- - 基于项目规格文档 pages/mall/mall.md 第4节“优惠券系统”抽象而来。
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-- - 仅创建 Analytics 所需的最小字段集合，兼容后续完整业务表替换。
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-- - 可安全重复执行（IF NOT EXISTS + 列存在性检查）。
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-- - 依赖：merchants、orders 表已存在（由 01_create_tables.sql 提供）。
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-- =============================================
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-- 1) 优惠券模板表（coupon_templates）
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CREATE TABLE IF NOT EXISTS public.coupon_templates (
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id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
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name text NOT NULL,
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description text,
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coupon_type integer NOT NULL, -- 1..8：满减/折扣/免运费/新人/会员/品类/商家/限时（见 mall.md）
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discount_type integer NOT NULL, -- 满减 / 折扣 / 免运费 等类型枚举
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discount_value numeric(10,2) NOT NULL, -- 金额或折扣值
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min_order_amount numeric(10,2) DEFAULT 0,
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max_discount_amount numeric(10,2),
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total_quantity integer,
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per_user_limit integer DEFAULT 1,
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usage_limit integer DEFAULT 1,
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merchant_id uuid,
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category_ids jsonb,
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product_ids jsonb,
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user_type_limit integer,
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start_time timestamptz NOT NULL,
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end_time timestamptz NOT NULL,
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status integer DEFAULT 1,
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created_at timestamptz DEFAULT now()
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);
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DO $$
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BEGIN
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-- 若缺少 merchant_id 外键且 merchants 表存在，则补充外键
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IF EXISTS (
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SELECT 1 FROM information_schema.tables
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WHERE table_schema = 'public' AND table_name = 'merchants'
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) THEN
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IF NOT EXISTS (
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SELECT 1
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FROM pg_constraint c
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JOIN pg_class t ON t.oid = c.conrelid
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JOIN pg_namespace n ON n.oid = t.relnamespace
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WHERE n.nspname = 'public'
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AND t.relname = 'coupon_templates'
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AND c.conname = 'coupon_templates_merchant_id_fkey'
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) THEN
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ALTER TABLE public.coupon_templates
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ADD CONSTRAINT coupon_templates_merchant_id_fkey
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FOREIGN KEY (merchant_id) REFERENCES public.merchants(id) ON DELETE SET NULL;
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END IF;
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END IF;
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END;
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$$;
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COMMENT ON TABLE public.coupon_templates IS '优惠券模板表（业务权威表，来自 mall.md）';
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COMMENT ON COLUMN public.coupon_templates.coupon_type IS '券类型：1..8（满减/折扣/免运费/新人/会员/品类/商家/限时）';
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-- 2) 用户优惠券表（user_coupons）
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CREATE TABLE IF NOT EXISTS public.user_coupons (
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id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
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user_id uuid,
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template_id uuid REFERENCES public.coupon_templates(id) ON DELETE CASCADE,
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coupon_code varchar(50) UNIQUE NOT NULL,
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status integer DEFAULT 1, -- 1 未使用，2 已使用，3 已过期 等（与 mall.md 对齐）
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used_at timestamptz,
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order_id uuid,
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received_at timestamptz DEFAULT now(),
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expire_at timestamptz NOT NULL
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);
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DO $$
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BEGIN
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-- 若 users 表存在则补 user_id 外键（保证幂等）
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IF EXISTS (
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SELECT 1 FROM information_schema.tables
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WHERE table_schema = 'public' AND table_name = 'users'
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) THEN
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IF NOT EXISTS (
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SELECT 1
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FROM pg_constraint c
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JOIN pg_class t ON t.oid = c.conrelid
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JOIN pg_namespace n ON n.oid = t.relnamespace
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WHERE n.nspname = 'public'
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AND t.relname = 'user_coupons'
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AND c.conname = 'user_coupons_user_id_fkey'
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) THEN
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ALTER TABLE public.user_coupons
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ADD CONSTRAINT user_coupons_user_id_fkey
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FOREIGN KEY (user_id) REFERENCES public.users(id) ON DELETE CASCADE;
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END IF;
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END IF;
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-- 若 orders 表存在则补 order_id 外键
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IF EXISTS (
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SELECT 1 FROM information_schema.tables
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WHERE table_schema = 'public' AND table_name = 'orders'
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) THEN
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IF NOT EXISTS (
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SELECT 1
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FROM pg_constraint c
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JOIN pg_class t ON t.oid = c.conrelid
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JOIN pg_namespace n ON n.oid = t.relnamespace
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WHERE n.nspname = 'public'
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AND t.relname = 'user_coupons'
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AND c.conname = 'user_coupons_order_id_fkey'
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) THEN
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ALTER TABLE public.user_coupons
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ADD CONSTRAINT user_coupons_order_id_fkey
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FOREIGN KEY (order_id) REFERENCES public.orders(id) ON DELETE SET NULL;
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END IF;
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END IF;
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-- 分析增强字段：发放渠道 obtain_channel
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IF NOT EXISTS (
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SELECT 1 FROM information_schema.columns
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WHERE table_schema = 'public' AND table_name = 'user_coupons' AND column_name = 'obtain_channel'
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) THEN
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ALTER TABLE public.user_coupons ADD COLUMN obtain_channel text;
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END IF;
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-- 分析增强字段：冗余 merchant_id，便于按商家过滤
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IF NOT EXISTS (
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SELECT 1 FROM information_schema.columns
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WHERE table_schema = 'public' AND table_name = 'user_coupons' AND column_name = 'merchant_id'
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) THEN
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ALTER TABLE public.user_coupons ADD COLUMN merchant_id uuid;
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END IF;
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END;
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$$;
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COMMENT ON TABLE public.user_coupons IS '用户优惠券表（领取/使用/到期信息）';
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COMMENT ON COLUMN public.user_coupons.obtain_channel IS '发放渠道：manual/auto/campaign/invite/cs/points 等';
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-- 3) 优惠券使用记录表（coupon_usage_logs）
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CREATE TABLE IF NOT EXISTS public.coupon_usage_logs (
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id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
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user_coupon_id uuid REFERENCES public.user_coupons(id) ON DELETE CASCADE,
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order_id uuid NOT NULL,
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discount_amount numeric(10,2) NOT NULL,
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used_at timestamptz DEFAULT now()
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);
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DO $$
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BEGIN
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-- 若 orders 表存在则补 order_id 外键
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IF EXISTS (
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SELECT 1 FROM information_schema.tables
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WHERE table_schema = 'public' AND table_name = 'orders'
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) THEN
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IF NOT EXISTS (
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SELECT 1
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FROM pg_constraint c
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JOIN pg_class t ON t.oid = c.conrelid
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JOIN pg_namespace n ON n.oid = t.relnamespace
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WHERE n.nspname = 'public'
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AND t.relname = 'coupon_usage_logs'
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AND c.conname = 'coupon_usage_logs_order_id_fkey'
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) THEN
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ALTER TABLE public.coupon_usage_logs
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ADD CONSTRAINT coupon_usage_logs_order_id_fkey
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FOREIGN KEY (order_id) REFERENCES public.orders(id) ON DELETE CASCADE;
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END IF;
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END IF;
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-- 分析增强字段：冗余 user_id / template_id / merchant_id / order_amount / created_at
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IF NOT EXISTS (
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SELECT 1 FROM information_schema.columns
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WHERE table_schema = 'public' AND table_name = 'coupon_usage_logs' AND column_name = 'user_id'
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) THEN
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ALTER TABLE public.coupon_usage_logs ADD COLUMN user_id uuid;
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END IF;
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IF NOT EXISTS (
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SELECT 1 FROM information_schema.columns
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WHERE table_schema = 'public' AND table_name = 'coupon_usage_logs' AND column_name = 'template_id'
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) THEN
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ALTER TABLE public.coupon_usage_logs ADD COLUMN template_id uuid;
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END IF;
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IF NOT EXISTS (
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SELECT 1 FROM information_schema.columns
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WHERE table_schema = 'public' AND table_name = 'coupon_usage_logs' AND column_name = 'merchant_id'
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) THEN
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ALTER TABLE public.coupon_usage_logs ADD COLUMN merchant_id uuid;
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END IF;
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IF NOT EXISTS (
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SELECT 1 FROM information_schema.columns
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WHERE table_schema = 'public' AND table_name = 'coupon_usage_logs' AND column_name = 'order_amount'
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) THEN
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ALTER TABLE public.coupon_usage_logs ADD COLUMN order_amount numeric(10,2);
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END IF;
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IF NOT EXISTS (
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SELECT 1 FROM information_schema.columns
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WHERE table_schema = 'public' AND table_name = 'coupon_usage_logs' AND column_name = 'created_at'
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) THEN
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ALTER TABLE public.coupon_usage_logs ADD COLUMN created_at timestamptz DEFAULT now();
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END IF;
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END;
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$$;
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COMMENT ON TABLE public.coupon_usage_logs IS '优惠券使用记录表（单次核销流水，用于 GMV / ROI 分析）';
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-- 4) 索引（幂等）
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CREATE INDEX IF NOT EXISTS idx_coupon_templates_merchant_id ON public.coupon_templates(merchant_id);
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CREATE INDEX IF NOT EXISTS idx_user_coupons_user_id ON public.user_coupons(user_id);
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CREATE INDEX IF NOT EXISTS idx_user_coupons_template_id ON public.user_coupons(template_id);
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CREATE INDEX IF NOT EXISTS idx_user_coupons_status ON public.user_coupons(status);
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CREATE INDEX IF NOT EXISTS idx_user_coupons_received_at ON public.user_coupons(received_at);
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CREATE INDEX IF NOT EXISTS idx_user_coupons_expire_at ON public.user_coupons(expire_at);
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CREATE INDEX IF NOT EXISTS idx_coupon_usage_logs_order_id ON public.coupon_usage_logs(order_id);
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CREATE INDEX IF NOT EXISTS idx_coupon_usage_logs_used_at ON public.coupon_usage_logs(used_at);
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-- 完成
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SELECT 'coupon tables ensured' AS message;
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