单项选择题X 纠错
A.Grant drop any table to user1
B.Grant drop any table to user1 with admin option
C.Grant drop table to user1
D.Grant drop any table to user1 with check potion
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单项选择题
A.SELECT e.empno,e.ename, e.deptno, d.deptno,d.loc FROM emp e,dept d WHERE e.deptno=d.deptno
B.SELECT e.empno, e.ename, e.deptno, d.deptno,d.loc FROM emp e,dept d
C.SELECT e.empno, e.ename, e.deptno, d.deptno,d.loc FROM emp e,dept d WHERE e.empno=101 and e.deptno=d.deptno
D.SELECT e.empno, e.ename, e.deptno, d.deptno,d.loc FROM emp e,dept d WHEREe.deptno=d.deptno and d.deptno=60
单项选择题
A.OPEN emp_cursor
B.OPEN emp_cursor FOR 20
C.OPEN emp_cursor USING 20
D.FOR emp_rec IN emp_cursor(20) LOOP … END LOOP
多项选择题
A.UNIQUE
B.NONUNIQUE
C.CHECK
D.CASCADE
E.PRIMARY KEY
F.CONSTANTG
G.NOT NULL