[sqlmap-users] --sql-query: only single field outputs allowed?

[<bu...@gm...>]

Hi there,

testcases:

#1
===========
--sql-query="select username from insecure.user"

output:
select username from insecure.user:    'admin'

#2
===========
--sql-query="select password from insecure.user"

output:
select password from insecure.user:    'foobar'

#3
===========
--sql-query="select * from insecure.user"

output:
select * from insecure.user:    'None'

#4
===========
--sql-query="select username,password from insecure.user"

output:
select username,password from insecure.user:    'None'


Question: Why is the output of #3 and #4 'None'?
(the table has only a single row)