题目内容
(请给出正确答案)
[单选题]
语句 SELECT DATEDIFF('2020-2-15','2020-2-25');的执行结果是()。
A.10
B.-10
C.11
D.-11
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A.10
B.-10
C.11
D.-11
A、If…Then…End If
B、Do While…Loop
C、If…Then…Else…End If
D、Select Case…End Select
A.SELECT
B.INSERT
C.UPDATE
D.DELETE
A.select*fromuser_tab_privs;
B.select*fromuser_tables;
C.select*fromuser_role_privs;
D.select*fromuser_sequences;
A.SELECT*FROM教师WHERE工资BETWEEN2000AND3000
B.SELECT*FROM教师WHERE工资>2000AND工资<3000
C.SELECT*FROM教师WHERE工资>2000OR工资<3000
D.SELECT*FROM教师WHERE工资<=2000AND工资>=3000