oracle实现按天，周，月，季度，年查询排序方法

oracle按天，周，月，季度，年查询排序

				?

									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

				?

									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

				?

									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

				?

									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

				?

									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

				?

									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。

				?

									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

oracle实现按天，周，月，季度，年查询排序方法

相关文章

热门资讯