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etl_billiards/scripts/analyze_member_discount_usage.py
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287
etl_billiards/scripts/analyze_member_discount_usage.py
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# -*- coding: utf-8 -*-
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"""
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会员折扣启用分析脚本
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功能说明：
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确认 dwd_settlement_head.member_discount_amount 字段是否已启用
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分析内容：
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1. 统计非零记录数
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2. 按时间分布分析
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3. 按会员类型分析
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4. 与其他字段的关联分析
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输出：
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- 控制台打印分析结果
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- 结论：字段是否已启用，使用场景
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作者：ETL团队
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创建日期：2026-02-01
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"""
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import os
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import sys
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from datetime import datetime
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from pathlib import Path
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from typing import Any, Dict, List
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# 添加项目根目录到Python路径
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project_root = Path(__file__).parent.parent.parent
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sys.path.insert(0, str(project_root))
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from etl_billiards.utils.config import Config
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from etl_billiards.utils.db import DatabaseConnection
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def analyze_member_discount_usage():
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"""
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执行会员折扣启用分析
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"""
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print("=" * 80)
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print("会员折扣启用分析 (member_discount_amount)")
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print("=" * 80)
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print()
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# 加载配置和数据库连接
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config = Config()
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db = DatabaseConnection(config)
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try:
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# 1. 基础统计
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print("【1. 基础统计】")
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print("-" * 40)
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basic_stats = get_basic_stats(db)
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print_basic_stats(basic_stats)
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print()
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# 2. 时间分布分析
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print("【2. 时间分布分析】")
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print("-" * 40)
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time_distribution = get_time_distribution(db)
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print_time_distribution(time_distribution)
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print()
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# 3. 会员类型分析
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print("【3. 与会员的关联分析】")
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print("-" * 40)
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member_analysis = get_member_analysis(db)
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print_member_analysis(member_analysis)
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print()
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# 4. 样本数据
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print("【4. 样本数据】")
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print("-" * 40)
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samples = get_sample_data(db)
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print_samples(samples)
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print()
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# 5. 结论
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print("【5. 分析结论】")
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print("-" * 40)
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print_conclusion(basic_stats)
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finally:
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db.close()
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def get_basic_stats(db: DatabaseConnection) -> Dict[str, Any]:
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"""
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获取基础统计数据
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"""
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sql = """
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SELECT
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COUNT(*) AS total_orders,
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COUNT(CASE WHEN member_discount_amount != 0 THEN 1 END) AS with_member_discount,
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COUNT(CASE WHEN member_discount_amount > 0 THEN 1 END) AS positive_discount,
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COUNT(CASE WHEN member_discount_amount < 0 THEN 1 END) AS negative_discount,
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SUM(member_discount_amount) AS total_member_discount,
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AVG(CASE WHEN member_discount_amount != 0 THEN member_discount_amount END) AS avg_discount,
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MAX(member_discount_amount) AS max_discount,
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MIN(member_discount_amount) AS min_discount,
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STDDEV(CASE WHEN member_discount_amount != 0 THEN member_discount_amount END) AS stddev_discount
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FROM billiards_dwd.dwd_settlement_head
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"""
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rows = db.query(sql)
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return dict(rows[0]) if rows else {}
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def get_time_distribution(db: DatabaseConnection) -> List[Dict[str, Any]]:
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"""
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获取按月份的时间分布
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"""
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sql = """
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SELECT
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DATE_TRUNC('month', create_time)::DATE AS month,
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COUNT(*) AS total_orders,
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COUNT(CASE WHEN member_discount_amount != 0 THEN 1 END) AS with_discount,
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SUM(member_discount_amount) AS total_discount
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FROM billiards_dwd.dwd_settlement_head
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GROUP BY DATE_TRUNC('month', create_time)
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ORDER BY month DESC
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LIMIT 12
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"""
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rows = db.query(sql)
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return [dict(row) for row in rows] if rows else []
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def get_member_analysis(db: DatabaseConnection) -> Dict[str, Any]:
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"""
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分析与会员的关联
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"""
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# 会员vs非会员
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sql_member_vs_guest = """
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SELECT
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CASE WHEN member_id = 0 THEN '散客' ELSE '会员' END AS customer_type,
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COUNT(*) AS total_orders,
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COUNT(CASE WHEN member_discount_amount != 0 THEN 1 END) AS with_discount,
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SUM(member_discount_amount) AS total_discount
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FROM billiards_dwd.dwd_settlement_head
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GROUP BY CASE WHEN member_id = 0 THEN '散客' ELSE '会员' END
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"""
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member_vs_guest = db.query(sql_member_vs_guest)
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# 按会员卡等级
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sql_by_grade = """
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SELECT
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COALESCE(m.member_card_grade_name, '未知') AS grade_name,
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COUNT(*) AS total_orders,
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COUNT(CASE WHEN sh.member_discount_amount != 0 THEN 1 END) AS with_discount,
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SUM(sh.member_discount_amount) AS total_discount
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FROM billiards_dwd.dwd_settlement_head sh
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LEFT JOIN billiards_dwd.dim_member m ON sh.member_id = m.member_id
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WHERE sh.member_id != 0
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GROUP BY COALESCE(m.member_card_grade_name, '未知')
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ORDER BY total_orders DESC
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"""
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by_grade = db.query(sql_by_grade)
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return {
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'member_vs_guest': [dict(row) for row in member_vs_guest] if member_vs_guest else [],
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'by_grade': [dict(row) for row in by_grade] if by_grade else []
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}
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def get_sample_data(db: DatabaseConnection) -> List[Dict[str, Any]]:
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"""
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获取有会员折扣的样本数据
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"""
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sql = """
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SELECT
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sh.order_settle_id,
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sh.order_trade_no,
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sh.create_time,
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sh.member_id,
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m.nickname AS member_name,
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m.member_card_grade_name,
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sh.consume_money,
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sh.pay_amount,
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sh.member_discount_amount,
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ROUND(sh.member_discount_amount / NULLIF(sh.consume_money, 0) * 100, 2) AS discount_ratio
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FROM billiards_dwd.dwd_settlement_head sh
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LEFT JOIN billiards_dwd.dim_member m ON sh.member_id = m.member_id
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WHERE sh.member_discount_amount != 0
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ORDER BY sh.create_time DESC
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LIMIT 20
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"""
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rows = db.query(sql)
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return [dict(row) for row in rows] if rows else []
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def print_basic_stats(stats: Dict[str, Any]):
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"""打印基础统计"""
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total = stats.get('total_orders', 1)
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with_discount = stats.get('with_member_discount', 0)
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print(f"总订单数: {total:,}")
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print(f"有会员折扣的订单: {with_discount:,} ({with_discount/total*100:.4f}%)")
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print(f" - 正值(折扣): {stats.get('positive_discount', 0):,}")
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print(f" - 负值(加价?): {stats.get('negative_discount', 0):,}")
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print()
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print(f"会员折扣总额: {stats.get('total_member_discount', 0):,.2f}")
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print(f"平均折扣: {stats.get('avg_discount', 0) or 0:,.2f}")
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print(f"最大折扣: {stats.get('max_discount', 0):,.2f}")
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print(f"最小折扣: {stats.get('min_discount', 0):,.2f}")
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def print_time_distribution(distribution: List[Dict[str, Any]]):
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"""打印时间分布"""
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if not distribution:
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print("无数据")
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return
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print(f"{'月份':<12} {'总订单':>10} {'有折扣':>10} {'折扣总额':>15}")
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print("-" * 50)
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for item in distribution:
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month = str(item.get('month', 'N/A'))[:7]
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total = item.get('total_orders', 0)
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with_discount = item.get('with_discount', 0)
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total_discount = item.get('total_discount', 0)
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print(f"{month:<12} {total:>10,} {with_discount:>10,} {total_discount:>15,.2f}")
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def print_member_analysis(analysis: Dict[str, Any]):
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"""打印会员分析"""
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print("会员 vs 散客:")
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for item in analysis.get('member_vs_guest', []):
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print(f" {item.get('customer_type', 'N/A')}: {item.get('total_orders', 0):,} 单, {item.get('with_discount', 0)} 单有折扣, 折扣总额 {item.get('total_discount', 0):,.2f}")
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print("\n按会员卡等级:")
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for item in analysis.get('by_grade', []):
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print(f" {item.get('grade_name', 'N/A')}: {item.get('total_orders', 0):,} 单, {item.get('with_discount', 0)} 单有折扣")
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def print_samples(samples: List[Dict[str, Any]]):
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"""打印样本数据"""
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if not samples:
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print("[!] 未发现使用会员折扣的订单")
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return
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print(f"{'订单ID':<20} {'会员':<15} {'等级':<10} {'消费':>12} {'折扣':>12} {'比例':>8}")
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print("-" * 80)
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for item in samples[:10]:
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order_id = str(item.get('order_settle_id', 'N/A'))[:18]
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member = str(item.get('member_name', 'N/A'))[:13]
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grade = str(item.get('member_card_grade_name', 'N/A'))[:8]
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consume = item.get('consume_money', 0)
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discount = item.get('member_discount_amount', 0)
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ratio = item.get('discount_ratio', 0)
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print(f"{order_id:<20} {member:<15} {grade:<10} {consume:>12,.2f} {discount:>12,.2f} {ratio:>7}%")
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def print_conclusion(stats: Dict[str, Any]):
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"""打印分析结论"""
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with_discount = stats.get('with_member_discount', 0)
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total = stats.get('total_orders', 1)
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ratio = with_discount / total * 100
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if with_discount == 0:
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print("【结论】: member_discount_amount 字段 **未启用**")
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print()
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print("该字段在所有订单中均为0，表明：")
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print(" 1. 会员折扣功能在业务系统中未开启")
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print(" 2. 或会员折扣通过其他方式（如adjust_amount）记录")
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print()
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print("【建议】:")
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print(" 1. 在DWS财务统计中，暂时不处理此字段")
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print(" 2. 将此字段标记为'预留/待启用'")
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print(" 3. 后续如果业务启用，再更新统计逻辑")
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elif ratio < 1:
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print(f"【结论】: member_discount_amount 字段 **极少使用** (仅{ratio:.4f}%订单)")
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print()
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print("该字段使用率极低，可能是：")
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print(" 1. 会员折扣功能刚启用不久")
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print(" 2. 仅特定场景使用")
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print()
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print("【建议】:")
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print(" 1. 在DWS财务统计中保留此字段的处理逻辑")
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print(" 2. 定期监控使用率变化")
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else:
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print(f"【结论】: member_discount_amount 字段 **已启用** ({ratio:.2f}%订单使用)")
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print()
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print("【建议】:")
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print(" 1. 在DWS财务优惠明细中正常统计此字段")
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print(" 2. 关注会员折扣与其他优惠的叠加规则")
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if __name__ == "__main__":
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analyze_member_discount_usage()
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