试题详情
- 单项选择题如何显示今天是星期几(周一到周日,分别用1~7表示)()
A、select to_char(sysdate,'D') from dual;
B、select to_char(sysdate,'W') from dual;
C、select to_char(sysdate,'D')-1 from dual;
D、select to_char(sysdate-1,'D') from dual;
E、select to_char(sysdate-1,'W') from dual;
- D
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