OLAP Object Queries : Fields Parameter : WHERE Filters

WHERE Filters
When link paths are used in the fields parameter, values can be filtered using a WHERE expression. For example, consider this URI query:
.../_query?q=Size>1000&f=InternalRecipients.WHERE(Person.Department:support)
This returns only InternalRecipients whose Person.Department contains the term “support”.
The WHERE clause does not have to be applied to the terminal field in the link path. For example:
.../_query?q=Size>1000&f=InternalRecipients.Person.WHERE(Department:support).Office
This returns InternalRecipients.Person.Office values for each message but only for InternalRecipients.Person objects whose Department contains the term “support”.