A string filter representation expresses filtering criteria as text conforming to a specific syntax. The API server parses and evaluates it to return only matching resources. section 22.3.1
Structured filters shift parsing and schema construction to the client, while string filters keep that responsibility on the API server. Both can express equivalent criteria; the practical choice concerns usability and future flexibility. section 22.3.1
Filtering ChatRoom resources
A string filter can select a ChatRoom with the title “New Chat!” using: SELECT * FROM ChatRooms WHERE title = "New Chat!";
