MySQL 筆試題

表和表間關係圖： 題目及答案：（未完，待續。。。） -- 1、課程1成績大於課程2成績的學生學號 select S,score from sc where c=1; select S,score from sc where c=2; select a.s from (select S,score from sc where c=1) a, (select S,score from sc whe

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