摘要:
【一】行转列 1,查询原始的数据 /***这次练习的主题,行转列,列转行***/select * from Scores 2,得到姓名,通过group by select Student as '姓名'from Scoresgroup by Studentorder by Student 3,再加上 阅读全文
摘要:
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace ConsoleApplication5 { cl 阅读全文
摘要:
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace ConsoleApplication4 { cl 阅读全文