[suchar]

Sometimes you can avoid writing multiple queries with different filters by creating single parameterized query with conditions like:

    WHERE (name LIKE :name OR :name IS NULL)
      AND (city = :city OR :city IS NULL)
      AND ...

By no means it is perfect, but can save you from writing many different queries for different filters while being easy to optimize by db (:name and :city are known before query execution).

Still, I prefer explicit SQL in webservices/microservices/etc. the code and its logic is "irrelevant" - we care only about external effects: database content, result of a db query, calls to external services (db can be considered to be nothing more than an external service). And it's easier to understand what's going on when there is one less layer of abstraction (orm)