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
十年的潮州网站建设经验,针对设计、前端、开发、售后、文案、推广等六对一服务,响应快,48小时及时工作处理。营销型网站建设的优势是能够根据用户设备显示端的尺寸不同,自动调整潮州建站的显示方式,使网站能够适用不同显示终端,在浏览器中调整网站的宽度,无论在任何一种浏览器上浏览网站,都能展现优雅布局与设计,从而大程度地提升浏览体验。创新互联建站从事“潮州网站设计”,“潮州网站推广”以来,每个客户项目都认真落实执行。
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创新互联网站的支持!
如果你觉得本文对你有帮助,欢迎转载,烦请注明出处,谢谢!
网站栏目:oracle实现按天,周,月,季度,年查询排序方法
文章网址:http://azwzsj.com/article/gisese.html