How to pass parameters to query?

Question

I\'m trying to write a query for my application, but I\'m having some troubles. I need to pass as a parameter one field of my database, like:

Answer 1

if you need to order by parameter try this:

SELECT name, phone, email ,(case when $P{order} = 'name' then name when $P{order} = 'phone' then phone else email end) as orderlist
FROM company 
WHERE $P{clause} = $P{key}
ORDER BY orderlist