更新数据表中的记录用以下哪一项( )
A.DELETE
B.ALTRE
C.UPDATE
D.SELECT

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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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

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