Netezza SQL - 按聚合输出排序

Question

Select date, count(*) as volume
from table
group by date
order by 2
or
order by count
or
order by count(*)

订单依据不适用于上述任何选项。我想要按量订购

你能帮忙吗？

Answer 1

我刚刚在Netezza上尝试了所有三个查询，其中只有两个正在运行。

- 工作正常

   SELECT DATE, COUNT(*) AS VOLUME
   FROM TABLE
   GROUP BY DATE
   ORDER BY 2;

- 工作正常

   SELECT DATE, COUNT(*) AS VOLUME
   FROM TABLE
   GROUP BY DATE
   ORDER BY COUNT(*)

- 这不起作用，因为select by子句中不存在Order by Column。

   SELECT DATE, COUNT(*) AS VOLUME
   FROM TABLE
   GROUP BY DATE
   ORDER BY COUNT;