sql how to execute 2 select statement in a single query ,,,it is showing me : I want to count  column first:  as total number of instances of each column ,
second  ,count total number of instances based on condition 
I am using this 
Select group_name, Definition_Range ,count([group_name]) as Number_of_Clients from [Computer Status] where Definition_Range =' 0-10 Days' group by group_name,(select count([group_name]) as Total_Clients from [Computer Status]  group by group_name)