Mar 302015
 

The following SQL statements are all clues to the names of trees:

--#1
select covering
from   mammals;

--#2
update wood
set    state = 'burnt';

--#3
select admiration
from   people
minus
select name
from   pronouns
where  type = 'second person';

--#4
select target
from   diseases
where  nationality = 'Dutch';

--#5
update oslo
set    appearance = 'smarter';

--#6
select *
from   elements e
join   punishments p
where  e.atomic_number = 47
and    p.type = 'beating';

Can you guess them all? Put your answers in the comments :)