单项选择题

以下哪项属于DDL操作( )
A.update
B.create
C. insert
D.delete

A.update
B.create
C.delete
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单项选择题
以下说法错误的是( ) A.SELECT max(sal),deptno,job FROM EMP group by sal; B.SELECT max(sal),deptno,job FROM EMP group by deptno; C.SELECT max(sal),deptno,job FROM EMP; D.SELECT max(sal),deptno,job FROM EMP group by job;
A.SELECT
B.SELECT
C.SELECT
D.SELECT
单项选择题
以下删除表正确的( ) A.Delete * from emp B.Drop database emp C.Drop * from emp D.delete database emp
A.Delete
B.Drop
C.Drop
D.delete
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