• 2022-05-28
    ‎从Student表检索年龄小于21岁的男学生信息,最规范的SQL语句是( )。‍
    A: Select * From Student Where Ssex='男' Or Sage<'21'
    B: Select * From Student Where Ssex='男' Or Sage<21
    C: Select * From Student Where Ssex=男 And Sage<'21'
    D: Select * From Student Where Ssex='男' And Sage<21
  • 举一反三