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;
正确答案:D
答案解析:有
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