• 2022-06-08
    将STUDENT、表中NL列的值都更新为20岁,正确的SQL语句是______
    A: UPDATE STUDENT SET NL=21
    B: SET STUDENT UPDATE NL=20
    C: UPDATE STUDENT SET NL=20
    D: INSERT INTO STUDENT SET NL=20
  • C

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    • 0

      将所有计算机系学生的年龄增加1岁的正确语句是:( )。 A: UPDATE SET Student.Sage = Student .Sage + 1 WHERE Student.Sdept = 'CS'; B: UPDATE Student SET Sage + 1 WHERE Sdept = 'CS'; C: UPDATE Student SET Sage =Sage + 1 WHERE Sdept = 'CS'; D: UPDATE Student SET Sage += 1 WHERE Sdept = 'CS';

    • 1

      使用SQL语句将学生表STUDENT中的学生年龄AGE字段的值增加1岁,应该使用的命令是( )。 A: UPDATE SET AGE WITH AGE+1 B: REPLACE AGE WITH AGE+1 C: UPDATE STUDENT SET AGE=AGE+1 D: UPDATE STUDENT AGE WITH AGE+1

    • 2

      将STUDENT表中所有学生年龄AGE字段值增加1岁,应使用命令( ). A: REPLACE AGE WITH AGE+1 B: UPDATE SET AGE WITH AGE+1 C: UPDATE STUDENT AGE WITH AGE+1 D: UPDATE STUDENT SET AGE=AGE+1

    • 3

      更新student表id=1的记录,name值更新为”youjun”,grade值更新为98.5,下列选项中,能够完成上述功能的SQL语句是 A: UPDATE student set name=’youjun’ grade=98.5 where id=1; B: UPDATE student set name=’youjun’, grade=98.5 where id=1; C: UPDATE FROM student set name=’youjun’ ,grade=98.5 where id=1; D: UPDATE student Values name=’youjun’ grade=98.5 where id=1;

    • 4

      使用SQL命令将STUDENT中的学生年龄AGE字段值增加1岁,应该使用的命令是( )。 A: REPLACE AGE WITH AGE+1 B: UPDATE STUDENT AGE WITH AGE+1 C: UPDATE STUDENT SET AGE=AGE+1 D: UPDATE SET AGE WITH AGE+1