oracle中怎麼查這個月每週的數量

2021-10-03 14:42:38 字數 2833 閱讀 1089

第一周：

select count(0) num,'第一周' as name from t_customer t where t.register_time between 


trunc(sysdate,'mm') and trunc(sysdate,'mm')+7
第二週：

select count(0) num,'第二週' as name from t_customer t where t.register_time between 


trunc(sysdate,'mm')+7 and trunc(sysdate,'mm')+14
第三週：

select count(0) num,'第三週' as name from t_customer t where t.register_time between 


trunc(sysdate,'mm')+14 and trunc(sysdate,'mm')+21
第四周：

select count(0) num,'第四周' as name from t_customer t where t.register_time between 


trunc(sysdate,'mm')+21 and trunc(sysdate,'mm')+28
第五周（最後一周）：

select count(0) num,'第五周' as name from t_customer t where t.register_time between 


trunc(sysdate,'mm')+28 and trunc(last_day(sysdate),'dd')+1
union:

沒有按順序

---沒有按順序--


select num,name from (


select count(0) num,'第一周' as name from t_customer t where t.register_time between 


trunc(sysdate,'mm') and trunc(sysdate,'mm')+7


union


select count(0) num,'第二週' as name from t_customer t where t.register_time between 


trunc(sysdate,'mm')+7 and trunc(sysdate,'mm')+14


union


select count(0) num,'第三週' as name from t_customer t where t.register_time between 


trunc(sysdate,'mm')+14 and trunc(sysdate,'mm')+21


union


select count(0) num,'第四周' as name from t_customer t where t.register_time between 


trunc(sysdate,'mm')+21 and trunc(sysdate,'mm')+28


union


select count(0) num,'第五周' as name from t_customer t where t.register_time between 


trunc(sysdate,'mm')+28 and trunc(last_day(sysdate),'dd')+1


)order by name;
按順序：

---按順序


select num,name,ord from (


select count(0) num,'第一周' as name,1 as ord from t_customer t where t.register_time between 


trunc(sysdate,'mm') and trunc(sysdate,'mm')+7


union


select count(0) num,'第二週' as name,2 as ord from t_customer t where t.register_time between 


trunc(sysdate,'mm')+7 and trunc(sysdate,'mm')+14


union


select count(0) num,'第三週' as name,3 as ord from t_customer t where t.register_time between 


trunc(sysdate,'mm')+14 and trunc(sysdate,'mm')+21


union


select count(0) num,'第四周' as name,4 as ord from t_customer t where t.register_time between 


trunc(sysdate,'mm')+21 and trunc(sysdate,'mm')+28


union


select count(0) num,'第五周' as name,5 as ord from t_customer t where t.register_time between 


trunc(sysdate,'mm')+28 and trunc(last_day(sysdate),'dd')+1


)order by ord;

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