Need help to create wmi filtering for all desktops and "win 7 and 8"

Hello,

Please help to create wmi filtering for "all desktops" or "win 7 and 8 only"

I used this, but not working:

select * from Win32_OperatingSystem where Version like "6.1%" and ProductType = "1"

select * from Win32_OperatingSystem where Version LIKE "6.2%" and ProductType = "1"

 it works if I only 1 line.

Thanks in advance