sqlite group by语句

Question

我有一张包含约200条记录的表格，每条记录都有日期，广告区域，收入，点击次数，cpm。

在同一语句中分组的记录数的正确sqlite语句总数是多少？

select SUM(revenue), SUM(clicks), adzone
  from mytable
  where date='12345'
  group by adzone

Answer 1

添加COUNT(1)列：

select SUM(revenue), SUM(clicks), adzone, COUNT(1)
  from mytable
 where date='12345'
 group by adzone