On Tue, 14 Aug 2007, giuseppe.derossi@email.it wrote:
> Name, Surname , Job, Hobby, Pet, address
> John, Smith, NULL, photo, NULL, NULL
> John, Smith, student, NULL, cat, NULL
> by using name and surname as selecting key, I want :
>
> John, Smith, student, photo, cat, NULL
If you are sure there's no conflict (multiple values) for a (name,
surname) key, one simple solution might be (surely not an efficient one)
select
(select distinct Name from thetable where Name = 'name1' and Surname = 'surname1' where Name is not null),
(select distinct Surname from thetable where Name = 'name1' and Surname = 'surname1' where Surname is not null),
(select distinct Job from thetable where Name = 'name1' and Surname = 'surname1' where Job is not null),
(select distinct Hobby from thetable where Name = 'name1' and Surname = 'surname1' where Hobby is not null),
(select distinct Pet from thetable where Name = 'name1' and Surname = 'surname1' where Pet is not null),
(select distinct address from thetable where Name = 'name1' and Surname = 'surname1' where address is not null)
This will fail if you also have
John, Smith, student, NULL, dog, NULL
in addition to
> John, Smith, student, NULL, cat, NULL
You can test for offending rows by:
select
array_to_string( array( select distinct Pet from thetable where Name = 'name1' and Surname = 'surname1' where Pet is
notnull),',')
and so on...
Regards,
Ben K.
Developer
http://benix.tamu.edu