根据每月 SQL 更新余额答案

【问题标题】：Updated Balance Against Every Month SQL根据每月 SQL 更新余额
【发布时间】：2022-01-09 06:31:17
【问题描述】：

我正在使用以下查询来获取每个客户一个月的更新余额。给定日期范围仅为一个月，但现在我需要针对给定日期范围内的每个人提取最新余额。查询如下供您参考。

SELECT *
         FROM   (SELECT id,
                        date_1,
                        balance,
                        Row_number()
                          OVER (
                            partition BY id
                            ORDER BY date_1 DESC) AS RN
                 FROM   customer
             WHERE  date_1 BETWEEN '2021-01-01' AND '2021-01-30'
                
                ) sub
         WHERE  rn = 1

【问题讨论】：

标签： sql date-range

【解决方案1】：

尝试在 Row_number() 窗口函数中删除 Partition By。

SELECT *
         FROM   (SELECT id,
                        date_1,
                        balance,
                        Row_number()
                          OVER (ORDER BY date_1 DESC) AS RN
                 FROM   customer
             WHERE  date_1 BETWEEN '2021-01-01' AND '2021-01-30'
                
                ) sub
         WHERE  rn = 1

【讨论】：