查询一周内的所有天数

select min_date, to_char(min_date,'day') day from
(select to_date(substr('2004-14',1,4)||'001'+rownum-1,'yyyyddd') min_date from all_tables where rownum <= decode(mod(to_number(substr('2004-14',1,4)),4),0,366,365)  
   union
   select to_date(substr('2004-14',1,4)-1|| decode(mod(to_number(substr('2004-14',1,4))-1,4),0,359,358)+rownum,'yyyyddd') min_date  from all_tables where rownum <= 7
   union
   select to_date(substr('2004-14',1,4)+1||'001'+rownum-1,'yyyyddd') min_date  from all_tables where rownum <= 7                       
)
where to_char(min_date,'yyyy-iw') ='2004-14'

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