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  create table test(
  Id number not null, --ID
  weedNo number not null, --Öܺţ¨1£¬2£¬3£©
  beginDay varchar(20) not null,--¿ªÊ¼Ê±¼ä
  endDay varchar(20) not null, --½áÊøÊ±¼ä
  )
  
  ÎÒÏÖÔÚÐèҪдһ¸ö´æ´¢¹ý³Ì ÊäÈëÒ»¸öÄê·ÝºÍÔ·ݾ͵÷Óô˴洢¹ý³Ì ÔÚÊý¾Ý¿âÖÐÌí¼Ó¶àÌõ¼Ç¼
  Çë½Ì¸ßÊÖ ¶àл£¡£¡
SQL code:
select
trunc(next_day(sysdate,1),'mm') µÚÒ»ÖÜ¿ªÊ¼,
trunc(next_day(sysdate,1),'dd') µÚÒ»ÖܽáÊø,
trunc(next_day(sysdate,1),'dd')+1 µÚ¶þÖÜ¿ªÊ¼,
trunc(next_day(sysdate,1)+7) µÚ¶þÖܽáÊø
from dual;
½á¹û:
µÚÒ»ÖÜ¿ªÊ¼ µÚÒ»ÖܽáÊø µÚ¶þÖÜ¿ªÊ¼ µÚ¶þÖܽáÊø
2010-05-01 2010-05-02 2010-05-03 2010-05-09



SQL code:
SQL> select week_of_year + 1 - min(week_of_year) over() week_no_of_month,
2 first_day_of_week,
3 last_day_of_week
4 from (
5 select min(the_day) first_day_of_week,
6 max(the_day) last_day_of_week,
7 to_char(the_day, 'I


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