查询Student表中的所有非空Email信息,以下语句正确的是( )。选项: A:SELECT Email FROM Student WHERE Email != NULL;; B:SELECT Email FROM Student WHERE Email NOT IS NULL;; C:SELECT Email FROM Student WHERE Email <> NULL;; D:SELECT Email FROM Student WHERE Email IS NOT NULL; 信息 所有 发布时间:2024-04-10 10:06:09