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;
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;
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