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Oracle PL/SQL之NEXT_DAY - 取得下一個星期幾所在的日期

發(fā)布時間: 2012/8/27 17:39:02

NEXT_DAY(date,char)：返回指定日期（由date指定）后的第一個星期幾（由char指定）所在的日期，char也可用1～7替代，1表示星期日。
1.duzz$scott@orcl>select sysdate,to_char(sysdate,'day') weekday,next_day(sysdate,1) n_day,to_char(next_day(sysdate,1),'day') n_weekday from dual;
2.
3.SYSDATE             WEEKDAY    N_DAY                N_WEEKDAY
4.------------------- ---------- -------------------- ----------   5.2011-08-22 23:01:18 monday     2011-08-28 23:01:18 sunday
6.
7.Elapsed: 00:00:00.00
8.duzz$scott@orcl>select sysdate,to_char(sysdate,'day') weekday,next_day(sysdate,2) n_day,to_char(next_day(sysdate,2),'day') n_weekday from dual; 9.
10.SYSDATE             WEEKDAY    N_DAY                N_WEEKDAY
11.------------------- ---------- -------------------- ----------   12.2011-08-22 23:04:26 monday     2011-08-29 23:04:26 monday
13.
14.Elapsed: 00:00:00.00
15.duzz$scott@orcl>select sysdate,to_char(sysdate,'day') weekday,next_day(sysdate,3) n_day,to_char(next_day(sysdate,3),'day') n_weekday from dual; 16.
17.SYSDATE             WEEKDAY    N_DAY                N_WEEKDAY
18.------------------- ---------- -------------------- ----------   19.2011-08-22 23:04:55 monday     2011-08-23 23:04:55 tuesday
20.
21.Elapsed: 00:00:00.00
22.duzz$scott@orcl>select sysdate,to_char(sysdate,'day') weekday,next_day(sysdate,'monday') n_day,to_char(next_day(sysdate,'monday'),'day') n_weekday from dual; 23.
24.SYSDATE             WEEKDAY    N_DAY                N_WEEKDAY
25.------------------- ---------- -------------------- ----------   26.2011-08-22 23:08:16 monday     2011-08-29 23:08:16 monday
27.
28.Elapsed: 00:00:00.00
29.duzz$scott@orcl>

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