ORACLE分析函數

1，rollup函數 select class 班級, subject 科目, sex 性別,sum(score) 總分數 from sailing_class group by rollup(class,subject,sex) order by class,subject,sex; 解釋： sum(彙總字段) group by rollup(字段A,字段B,字段C) 該函數會先對(A

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