题目内容
(请给出正确答案)
[单选题]
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;
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