How do I make a query return nothing when there are no conditions?

Question

Rather simple, I have a one to many / many to one relation and I\'d like to query it. However, I don\'t want any results returned when it isn\'t provided with any WHERE clause

Answer 1

You could add a where clause that is always false and append the condition you want supplied with OR:

select * from table where 1 = 0 OR (real conditions)