我有一个记录表,其中包含创建的行的日期。 (oracle db)
ID City CreateDate
1 city-1 12.12.2017
1 city-2 13.12.2017
1 city-1 13.12.2017
1 city-3 12.12.2017
....
....
我想在一个月内创建一个daiy报告。例如,12月份的城市1报告
Day Count
1 10
2 80
3 60
4 10
...
30 11
答案 0 :(得分:2)
我认为你可以使用提取计数函数:
SELECT EXTRACT(day FROM CreateDate) "Day",
COUNT(CreateDate) "Number of Reports"
FROM yourTableName
GROUP BY EXTRACT(day FROM CreateDate)
ORDER BY "Number of Reports" ASC;
答案 1 :(得分:1)
如果我理解正确,以下查询将生成您想要的12月报告。
SELECT EXTRACT(day FROM CreateDate) "Day", COUNT(*) "Count" FROM your_record_table WHERE EXTRACT(month FROM CreateDate) = 12 GROUP BY EXTRACT(day FROM CreateDate) ORDER BY EXTRACT(day FROM CreateDate);