Oracle,지난주 월요일 부터 주말 까지 의 조회 sql 문 구 를 가 져 옵 니 다.

 
-- Oracle         sql 

--              ，         
select to_char(to_date('20130906','yyyymmdd'),'d') from dual; 
--  ：6   ：2013.09.06   ，        

select to_char(sysdate+(2-to_char(sysdate,'d'))-7,'yyyymmdd') from dual;---    
select to_char(sysdate+(2-to_char(sysdate,'d'))-1,'yyyymmdd') from dual;---    

--          ，   date   
select trunc(sysdate,'iw') - 7 from dual;---    
select trunc(sysdate,'iw') - 1 from dual;--    

--           
select trunc(sysdate,'iw') from dual; 

select trunc(to_date('20130915','yyyymmdd'),'iw') from dual; 
--   ：2013/9/9   ：20130915     

--   char   
select to_char(trunc(sysdate,'iw') - 7,'yyyymmdd') from dual;--    
select to_char(trunc(sysdate,'iw') - 1,'yyyymmdd') from dual;--    

--          
create or replace function fun_acc_getlastweekstart(systemdate in date) 
return varchar2 is 
result_str varchar2(15); 
begin 
select to_char(trunc(systemdate, 'iw') - 7, 'yyyymmdd') 
into result_str 
from dual; 
return result_str; 
end fun_acc_getlastweekstart; 

--          
create or replace function fun_acc_getlastweekend(systemdate in date) return varchar2 is 
result_str varchar2(15); 
begin 
select to_char(trunc(systemdate, 'iw') - 1, 'yyyymmdd') 
into result_str 
from dual; 
return result_str; 
end fun_acc_getlastweekend; 

--        
select fun_acc_getlastweekstart(sysdate) from dual; 
select fun_acc_getlastweekend(sysdate) from dual; 
select fun_acc_getlastweekstart(to_date('20130915','yyyymmdd')) from dual; 
select fun_acc_getlastweekend(to_date('20130915','yyyymmdd')) from dual; 
--    ：20130826、20130901、20130902、20130908 
--  ： 
select sysdate from dual; 
--    ：2013/9/6 9:45:14