试题详情
- 单项选择题Which SQL statement returns a numeric value?()
A、SELECT ADD_MONTHS(MAX(hire_Date), 6) FROM EMP;
B、SELECT ROUND(hire_date) FROM EMP;
C、SELECT sysdate-hire_date FROM EMP;
D、SELECT TO_NUMBER(hire_date + 7) FROM EMP;
- C
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A、SELECT ADD_MONTHS(MAX(hire_Date), 6) FROM EMP;
B、SELECT ROUND(hire_date) FROM EMP;
C、SELECT sysdate-hire_date FROM EMP;
D、SELECT TO_NUMBER(hire_date + 7) FROM EMP;
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