你可能感興趣的試題

A.sysdate；
B.select sysdate；
C.select sysdate from dual；
D.select sysdate from common；

A.SELECT NAME +’’’saddressis’ + ADDR FROM EMP
B.SELECT NAME ∣∣ ’’’saddressis’ ∣∣ ADDR FROM EMP
C.SELECT NAME +’\’saddressis’ + ADDR FROM EMP
D.SELECT NAME ∣∣ ’\’saddressis’ ∣∣ ADDR FROM EMP