oracle实现按天，周，月，季度，年查询排序方法_oracle_

 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')

 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

 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

 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

 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

 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

 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')