The queries shown earlier, as well as those described in the Full Text Search Queries section, can be applied to scalar properties. Some repositories support the use of properties that are themselves an item from another (or the same) item descriptor. For example, the address property might point to another item descriptor which itself has properties like city, state, and zip.

Queries can drill down through these properties with a dot notation. For example: = "48322"

RQL allows for multiple levels of “property-of-property” expressions. For example: