• 2022-07-24
    如下⼏个表所示学⽣、课程、必修课和选课关系,⽤SQL语⾔实现下列操作。 从“课程”表中将2003号课去掉,正确的SQL语句是(  )。 
    A: DELETE FROM 课程 WHERE 课号=‘2003’;
    B: DELETE FROM 课程 WHERE 课号=2003;
    C: DELETE FROM 课程 WHERE ‘2003’;
    D: DELETE FROM 课程.课号=‘2003’;
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