说明: sql常用查询,内连接,外连接declare @sum int declare @count int set @count =0 set @sum =0 while @count <100 begin set @count =@count +1 set @sum =@sum +@count end print'1+2+3+....' print @sum create table employ ( empid varchar(10) not null primary key, empna <qq_19686615> 上传 | 大小:3kb