Migle的专栏

  查询分组中最大值所在行的所有字段例子：   查询所有用户最后一次登录的详细信息     select * from aips.user_login_history where (userid,logintime) in (select userid,max(logintime) from aips.user_login_history group...

  #!/usr/bin/env sh DBNODE='nodename' DBUSER='username' DBPASSWORD='password' connDB2() { if( db2 connect to $1 user $2 using $3 > /dev/null ) then echo 'OK' else echo ...