GROUP BY GROUP BY语法可以根据给定数据列的每个成员对查询结果进行分组统计,最终得到一个分组汇总表。在GROUP BY子句后面包含了一个HAVING子句,HAVING类似于WHERE,(唯一的差别是WHERE过滤行,HAVING过滤组)。 1)列出每个部门最高薪水的结果 select dept , max(salary) AS MAXIMUMFROM STAFFGROUP
题目位置:https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=666 Write a program that finds and displays all pairs of 5-digit numbers that between them use th