oracle按天，周，月，季度，年查詢排序
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')
按天查詢
select to_char(t.start_time,'YYYY-MM-DD') day ,count(*) from test t where to_char(t.start_time,'YYYY')='2019' --條件限制group by to_char(t.start_time,'YYYY-MM-DD') --分組order by to_char(t.start_time,'YYYY-MM-DD') --排序
按周查詢
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' --條件限制group by to_char(t.start_time,'YYYY') year ,to_char(t.start_time,'IW')--分組order by to_char(t.start_time,'YYYY') year,to_char(t.start_time,'IW') --排序
按月度查詢
select to_char(t.start_time,'YYYY-MM') ,count(*) from test t where to_char(t.start_time,'YYYY')='2019' --條件限制group by to_char(t.start_time,'YYYY-MM') --分組order byto_char(t.start_time,'YYYY-MM') --排序
按季度查詢
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' --條件限制group by to_char(t.start_time,'YYYY') ,to_char(t.start_time,'Q')--分組order byto_char(t.start_time,'YYYY') ,to_char(t.start_time,'Q')--排序
按年度查詢
select to_char(t.start_time,'YYYY') year ,count(*) from test t where to_char(t.start_time,'YYYY')='2019' --條件限制group by to_char(t.start_time,'YYYY') --分組order by to_char(t.start_time,'YYYY') --排序
知識點擴展：oracle 實現按天,周,月,季度,年查詢統計數據
這里提供了一種方法，挺不錯oracle 實現按周,月,季度,年查詢統計數據 。
還在網上看到用trunc來搞也可以，下面是個例子，兩句SQL效果一樣的.
id有重復的，所以group by搞了兩個字段.
只在Oracle數據庫里試過，其它庫沒試過。
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 ------------------------------------------------------------------------------//按天統計 select count(dataid) as 每天操作數量, sum() from where group by trunc(createtime, 'DD')) //按自然周統計 select to_char(date,'iw'),sum() from where group by to_char(date,'iw') //按自然月統計 select to_char(date,'mm'),sum() from where group by to_char(date,'mm') //按季統計 select to_char(date,'q'),sum() from where group by to_char(date,'q') //按年統計 select to_char(date,'yyyy'),sum() from where group by to_char(date,'yyyy')
總結
以上所述是小編給大家介紹的oracle實現按天，周，月，季度，年查詢排序方法,希望對大家有所幫助，如果大家有任何疑問請給我留言，小編會及時回復大家的。在此也非常感謝大家對武林網網站的支持！
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