6.1 普通分组:按字段值

 

有日销售统计表如下所示,请算出每种产品的总销售额

Date Product Sales
2022-01-01 00:00:00 Cereal 98.0000
2022-01-01 00:00:00 Meat 174.0000
2022-01-02 00:00:00 Cereal 168.0000
2022-01-02 00:00:00 Meat 167.4000
2022-01-03 00:00:00 Cereal 1696.0000

脚本:

A
1 =T(“DailySales.xls”)
2 =A1.groups(Product;sum(Sales):Sales)
3 =A1.group(Product;~.sum(Sales):Sales)

A2 分组的同时进行聚合运算,不产生分组子集
A3 先产生分组子集,再对子集做聚合运算,结果和 A2 相同

运行结果:

Product Sales
Cereal 309998
Meat 174645