新 column.Oracle 中不同年份结果的聚合

Question

Тhis is the result i achieved on a monthly basis.

这里我按月收集所有的结果在Comulative。 Е每个新时期都以累积

的形式添加到旧时期

SELECT date,period,SUM(period) OVER(ORDER BY date ) AS Comulative) 按日期分组

date,        period     cumulative  
1-May-19,      1,      1    
1-Jun-19,      2,      3    
1-Jul-19,      4,      7    
1-Aug-19,      1,      8    
1-Sep-19,      0,      8    
1-May-20,      10,     18   
1-Feb-20,      0,     18    
1-Mar-20,      0,     18    
1-Apr-21,      1,     19    
1-Jul-21,      1,     20    
1-Aug-21,      1,     21    
1-Sep-21,      1,     22

我想每年都达到同样的结果。

date,         period, cumolative 
2019,            8,     8
2020,            10,     18
2021,             4,     22

我用它来格式化日期。 to_char(日期,'yyyy')

Answer 1

可以先生成SUM结果再做累加和-

SELECT date, period, SUM(period) OVER(ORDER BY date)
  FROM (SELECT EXTRACT(YEAR FROM date) date, SUM(period) period
          FROM YOUR_TABLE
         GROUP BY EXTRACT(YEAR FROM date));

新 column.Oracle 中不同年份结果的聚合

Аggregation of the result in different years in a new column.Oracle

oracle11g