oracle按天，周，月，季度，年查询排序
|
1
2
3
4
5
|
天--to_char(t.start_time,'YYYY-MM-DD')
周 --to_char(t.start_time,'YYYY')，to_char(t.start_time,'IW')
月度--to_char(t.start_time,'YYYY-MM')
季度--to_char(t.start_time,'YYYY')，to_char(t.start_time,'Q')
年度--to_char(t.start_time,'YYYY')
|
按天查询
|
1
2
3
4
|
select to_char(t.start_time,'YYYY-MM-DD') day ,count(*) from test t
where to_char(t.start_time,'YYYY')='2019' --条件限制
group by to_char(t.start_time,'YYYY-MM-DD') --分组
order by to_char(t.start_time,'YYYY-MM-DD') --排序
|
按周查询
|
1
2
3
4
|
select to_char(t.start_time,'YYYY') year ,to_char(t.start_time,'IW'),count(*) from test t
where to_char(t.start_time,'YYYY')='2019' --条件限制
group by to_char(t.start_time,'YYYY') year ,to_char(t.start_time,'IW')--分组
order by to_char(t.start_time,'YYYY') year,to_char(t.start_time,'IW') --排序
|
按月度查询
|
1
2
3
4
|
select to_char(t.start_time,'YYYY-MM') ,count(*) from test t
where to_char(t.start_time,'YYYY')='2019' --条件限制
group by to_char(t.start_time,'YYYY-MM') --分组
order byto_char(t.start_time,'YYYY-MM') --排序
|
按季度查询
|
1
2
3
4
|
select to_char(t.start_time,'YYYY') year ,to_char(t.start_time,'Q'),count(*) from test t
where to_char(t.start_time,'YYYY')='2019' --条件限制
group by to_char(t.start_time,'YYYY') ,to_char(t.start_time,'Q')--分组
order byto_char(t.start_time,'YYYY') ,to_char(t.start_time,'Q')--排序
|
按年度查询
|
1
2
3
4
|
select to_char(t.start_time,'YYYY') year ,count(*) from test t
where to_char(t.start_time,'YYYY')='2019' --条件限制
group by to_char(t.start_time,'YYYY') --分组
order by to_char(t.start_time,'YYYY') --排序
|
知识点扩展：oracle 实现按天,周,月,季度,年查询统计数据
这里提供了一种方法，挺不错oracle 实现按周,月,季度,年查询统计数据 。
还在网上看到用trunc来搞也可以，下面是个例子，两句SQL效果一样的.
id有重复的，所以group by搞了两个字段.
只在Oracle数据库里试过，其它库没试过。
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
create table CONSUMER_ACC
(
ID VARCHAR2(50) not null ,
ACC_NUM VARCHAR2(10),
DATETIME DATE
)
select t.id,trunc(t.datetime, 'mm' ) as d, sum (t.acc_num) as n
from CONSUMER_ACC t
--where
group by t.id,trunc(t.datetime, 'mm' )
order by n desc ;
select t.id,to_char(t.datetime, 'mm' ) d , sum (t.acc_num) n
from CONSUMER_ACC t
--where
group by t.id,to_char(t.datetime, 'mm' )
order by n desc
------------------------------------------------------------------------------
//按天统计
select count(dataid) as 每天操作数量, sum()
from
where
group by trunc(createtime, 'DD'))
//按自然周统计
select to_char(date,'iw'),sum()
from
where
group by to_char(date,'iw')
//按自然月统计
select to_char(date,'mm'),sum()
from
where
group by to_char(date,'mm')
//按季统计
select to_char(date,'q'),sum()
from
where
group by to_char(date,'q')
//按年统计
select to_char(date,'yyyy'),sum()
from
where
group by to_char(date,'yyyy')
|
总结
以上所述是小编给大家介绍的oracle实现按天，周，月，季度，年查询排序方法,希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对服务器之家网站的支持！
如果你觉得本文对你有帮助，欢迎转载，烦请注明出处，谢谢！
原文链接：https://blog.51cto.com/5776643/2442481