需求描述假设你是一位数据分析师，负责分析某电商平台的用户行为和订单数据，平台上有多个用户，用户可以在不同的日期下单，每个订单包含多个商品。请你完成相关业务分析，帮助平台优化运营策略和用户体验。数据准备我们有三张表，表的字段信息如下： users 表记录用户的信息字段名字段类型备注 user_id int ...

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云数据库 RDS SQL Server 版

云数据库SQL Server，具有企业许可授权，权限更为开放，引擎功能更为强大。能完美支持Windows平台的.NET架构，支持复杂SQL查询，性能优秀，并有强大的可视化管理工具，帮助您轻松管理数据。

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