• 2022-06-15
    有两个结构一样的学生名单表,“1班”和“2班”,查找并显示两个班所有学生信息的正确查询语句是?
    A: select * from 1班;unionselect * from 2班;
    B: select * from 1班;andselect * from 2班;
    C: select * from 1班;fromselect * from 2班;
    D: select * from 1班;select * from 2班;