陈松良的《关于216阶群的完全分类》一文证明G216共有177种互不同构的类型,并获得了G的全部构造。 gap> NumberSmallGroups(216); 177 gap> for n in [1..177] do G:=SmallGroup(216,n);idn:=IdGroup(G);Print(idn);Print(":");L:=List(Elements(G),Order);;M:
题目: 表: Employee +-------------+------+| Column Name | Type |+-------------+------+| id | int || salary | int |+-------------+------+在 SQL 中,id 是该表的主键。该表的每一行都包含有关员工工资的信息。 查询 E
原题 CREATE FUNCTION getNthHighestSalary(N INT) RETURNS INTBEGINDECLARE M INT; SET M = N-1; RETURN (# Write your MySQL query statement below.select salary from (select distinct salary from Employee o
QUESTION 177 Which of the following files cannot be backed up by RMAN? (Choose all that apply.) A. Database datafiles B. Control files C. Online redo logs D. Database pfiles E. Archived redo log