Non-null string in Hive array

Question

Assuming a source table with structure:

personid INT, 
name STRING,
mobilephone STRING,
homephone STRING

and target table structure:

personid INT, 
telephone ARRAY<STRING>

To insert into target from source, I did

select 
personid,
array(mobilephone, homephone)
from source_table

12, ["[phone]","[phone]"]
13, ["[phone]",""]

Second row in result shows empty string because homephone is null in source table. How to return something like this instead:

12, ["[phone]","[phone]"]
13, ["[phone]"] 

i.e. return item in array only if not null

Answer 1

select 
personid,
split(concat_ws(',',mobilephone,homephone),',')
from source_table