sed -i "1iServer = https://mirrors.tuna.tsinghua.edu.cn/msys2/mingw/i686" /etc/pacman.d/mirrorlist.mingw32 sed -i "1iServer = https://mirrors.tuna.tsinghua.edu.cn/msys2/mingw/x86_64" /etc/pacman.d/mirrorlist.mingw64 sed -i "1iServ
Oracle行结果合计的实现,主要应用于日期结果的集计,下面是具体的实现代码. With AA as ( select 'A' tNo , 10 B from dual union select 'B' , 20 from dual union select 'A' , 30 from dual ) select tNo , sum(B) over (partition by B order by B rows unbounded preceding) sumsal from AA 备注