Expand https://docs.microsoft.com/en-us/aspnet/web-api/overview/odata-support-in-aspnet-web-api/using-select-expand-and-value

    GET http://localhost/odata/Categories?$expand=Products

http://docs.oasis-open.org/odata/odata-data-aggregation-ext/v4.0/cs01/odata-data-aggregation-ext-v4.0-cs01.html#_The_expand_Transformation https://help.nintex.com/en-us/insight/OData/HE_CON_ODATAQueryCheatSheet.htm https://www.odata.org/documentation/odata-version-2-0/uri-conventions/

https://docs.microsoft.com/en-us/azure/search/search-query-odata-filter

Creating models

https://docs.microsoft.com/en-us/odata/webapi/model-builder-abstract