Can you show me the carriers that have phones with memories smaller than 32?
select carrier from phone where memory_in_g < 32
Can you show me the carriers that have phones with memories bigger than 64?
select carrier from phone where memory_in_g > 64
Can you show me the carriers that have phones with memories smaller than 32 and bigger than 64?
select carrier from phone where memory_in_g < 32 intersect select carrier from phone where memory_in_g > 64