数据分析ui补充完善，接入数据库

pages/mall/analytics/test/02_ml_analytics_rpcs_sales.sql

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+-- =====================================================================================
+-- 数据分析模块（正式RPC，主库 ml_* 口径）
+-- 文件: 02_ml_analytics_rpcs_sales.sql
+-- 主题: 仪表盘/销售报表（KPI/趋势/TOP）
+-- 口径约定:
+--   - GMV: paid_amount 汇总（若为 0 则用 total_amount 兜底）
+--   - 订单量: ml_orders created_at 期间内订单数（可按需要切换为支付订单数）
+--   - 支付用户数: payment_status=2 的 distinct user_id
+--   - 活跃用户数: ml_browse_history created_at 期间内 distinct user_id（弱口径）
+--   - 转化率(A): 支付用户数 / 活跃用户数（*100）
+-- =====================================================================================
+
+-- 1) 销售核心 KPI（含上期对比）
+CREATE OR REPLACE FUNCTION public.rpc_analytics_sales_kpis(
+    p_start_date DATE,
+    p_end_date DATE
+)
+RETURNS TABLE (
+    gmv NUMERIC,
+    gmv_growth FLOAT,
+    orders BIGINT,
+    order_growth FLOAT,
+    conversion_rate FLOAT,
+    conversion_growth FLOAT,
+    avg_order_amount NUMERIC,
+    avg_order_growth FLOAT
+)
+LANGUAGE plpgsql
+AS $$
+DECLARE
+    prev_start_date DATE;
+    prev_end_date DATE;
+    period_days INT;
+BEGIN
+    period_days := p_end_date - p_start_date + 1;
+    prev_start_date := p_start_date - period_days;
+    prev_end_date := p_start_date - 1;
+
+    RETURN QUERY
+    WITH
+    -- 当前周期
+    cur AS (
+        SELECT
+            COALESCE(
+              SUM(CASE WHEN o.payment_status = 2 THEN COALESCE(NULLIF(o.paid_amount, 0), o.total_amount) ELSE 0 END),
+              0
+            ) AS gmv,
+            COUNT(*)::BIGINT AS orders,
+            COUNT(DISTINCT CASE WHEN o.payment_status = 2 THEN o.user_id END)::BIGINT AS paid_users,
+            (SELECT COUNT(DISTINCT bh.user_id) FROM public.ml_browse_history bh WHERE bh.created_at::DATE BETWEEN p_start_date AND p_end_date)::BIGINT AS active_users
+        FROM public.ml_orders o
+        WHERE o.created_at::DATE BETWEEN p_start_date AND p_end_date
+    ),
+    -- 上一周期
+    prev AS (
+        SELECT
+            COALESCE(
+              SUM(CASE WHEN o.payment_status = 2 THEN COALESCE(NULLIF(o.paid_amount, 0), o.total_amount) ELSE 0 END),
+              0
+            ) AS gmv,
+            COUNT(*)::BIGINT AS orders,
+            COUNT(DISTINCT CASE WHEN o.payment_status = 2 THEN o.user_id END)::BIGINT AS paid_users,
+            (SELECT COUNT(DISTINCT bh.user_id) FROM public.ml_browse_history bh WHERE bh.created_at::DATE BETWEEN prev_start_date AND prev_end_date)::BIGINT AS active_users
+        FROM public.ml_orders o
+        WHERE o.created_at::DATE BETWEEN prev_start_date AND prev_end_date
+    ),
+    calc AS (
+        SELECT
+            cur.gmv AS gmv,
+            cur.orders AS orders,
+            CASE WHEN cur.active_users > 0 THEN (cur.paid_users::NUMERIC / cur.active_users::NUMERIC) * 100 ELSE 0 END AS conversion_rate,
+            CASE WHEN cur.orders > 0 THEN cur.gmv / cur.orders ELSE 0 END AS avg_order_amount,
+
+            prev.gmv AS prev_gmv,
+            prev.orders AS prev_orders,
+            CASE WHEN prev.active_users > 0 THEN (prev.paid_users::NUMERIC / prev.active_users::NUMERIC) * 100 ELSE 0 END AS prev_conversion_rate,
+            CASE WHEN prev.orders > 0 THEN prev.gmv / prev.orders ELSE 0 END AS prev_avg_order_amount
+        FROM cur, prev
+    )
+    SELECT
+        ROUND(calc.gmv, 2) AS gmv,
+        ROUND(((calc.gmv - calc.prev_gmv) * 100.0 / NULLIF(calc.prev_gmv, 0))::numeric, 2)::FLOAT AS gmv_growth,
+        calc.orders,
+        ROUND(((calc.orders - calc.prev_orders) * 100.0 / NULLIF(calc.prev_orders, 0))::numeric, 2)::FLOAT AS order_growth,
+        ROUND(calc.conversion_rate::numeric, 2)::FLOAT AS conversion_rate,
+        ROUND((calc.conversion_rate - calc.prev_conversion_rate)::numeric, 2)::FLOAT AS conversion_growth,
+        ROUND(calc.avg_order_amount, 2) AS avg_order_amount,
+        ROUND(((calc.avg_order_amount - calc.prev_avg_order_amount) * 100.0 / NULLIF(calc.prev_avg_order_amount, 0))::numeric, 2)::FLOAT AS avg_order_growth
+    FROM calc;
+END;
+$$;
+
+
+-- 2) 销售趋势（日维度：GMV + 订单数）
+CREATE OR REPLACE FUNCTION public.rpc_analytics_sales_trend(
+    p_start_date DATE,
+    p_end_date DATE
+)
+RETURNS TABLE (
+    date DATE,
+    gmv NUMERIC,
+    orders BIGINT
+)
+LANGUAGE sql
+AS $$
+    WITH date_series AS (
+        SELECT generate_series(p_start_date, p_end_date, '1 day'::interval)::DATE AS date
+    )
+    SELECT
+        ds.date,
+        COALESCE(
+          SUM(CASE WHEN o.payment_status = 2 THEN COALESCE(NULLIF(o.paid_amount, 0), o.total_amount) ELSE 0 END),
+          0
+        ) AS gmv,
+        COUNT(o.id)::BIGINT AS orders
+    FROM date_series ds
+    LEFT JOIN public.ml_orders o
+      ON o.created_at::DATE = ds.date
+    GROUP BY ds.date
+    ORDER BY ds.date;
+$$;
+
+
+-- 3) 热销商品 TOP（按销量：sum(quantity)）
+CREATE OR REPLACE FUNCTION public.rpc_analytics_top_products(
+    p_start_date DATE,
+    p_end_date DATE,
+    p_limit INT DEFAULT 50
+)
+RETURNS TABLE (
+    id UUID,
+    name TEXT,
+    sales BIGINT
+)
+LANGUAGE sql
+AS $$
+    SELECT
+        p.id,
+        p.name::TEXT,
+        COALESCE(SUM(oi.quantity), 0)::BIGINT AS sales
+    FROM public.ml_order_items oi
+    JOIN public.ml_orders o ON o.id = oi.order_id
+    JOIN public.ml_products p ON p.id = oi.product_id
+    WHERE o.created_at::DATE BETWEEN p_start_date AND p_end_date
+      AND o.payment_status = 2
+    GROUP BY p.id, p.name
+    ORDER BY sales DESC
+    LIMIT p_limit;
+$$;
+
+
+-- 4) 商家排行 TOP（按 GMV：支付 GMV）
+CREATE OR REPLACE FUNCTION public.rpc_analytics_top_merchants(
+    p_start_date DATE,
+    p_end_date DATE,
+    p_limit INT DEFAULT 50
+)
+RETURNS TABLE (
+    id UUID,
+    name TEXT,
+    sales NUMERIC
+)
+LANGUAGE sql
+AS $$
+    SELECT
+        m.id,
+        COALESCE(NULLIF(m.username, ''), '未知商家')::TEXT AS name,
+        COALESCE(SUM(COALESCE(NULLIF(o.paid_amount, 0), o.total_amount)), 0) AS sales
+    FROM public.ml_orders o
+    JOIN public.ak_users m ON m.id = o.merchant_id
+    WHERE o.created_at::DATE BETWEEN p_start_date AND p_end_date
+      AND o.payment_status = 2
+    GROUP BY m.id, m.username
+    ORDER BY sales DESC
+    LIMIT p_limit;
+$$;