SQL. Какой вариант применения алиаса ошибочный?

a) select name as "FIO" from employee where "FIO" is not null
b) select name "FIO" from employee where name like '%S%'
c) select a.name as FIO from employee a
d) select name as FIO from employee where name like 'A%
e) select name FIO from employee order by FIO