单项选择题
A.select ename from emp where sysdate-hiredate>5B.select ename from emp where hiredate-sysdate>5C.select ename from emp where (sysdate-hiredate)/365>5D.select ename from emp where(sysdate-hiredate)*365>5
A.OracleHOME_NAMETNSListenerB.OracleServerSIDC.OracleHOME_NAMEAgentD.Oraclehome_NamehTtpServEr
A.无输出B.aC.a aD.a a a