You can try this one: http://services.odata.org/v4/DefaultService/$metadata. It's also one of the services provided by the OData.org.
ODataServices using ComplexTypes
Pergunta
Is anyone aware of location of any OData service using complex types?There are a lot of services on www.odata.org but they have properties which have SimpleTypes.
Solução
Outras dicas
If you create a service based on Enterprise framework (ADO.NET from Database), it will create just that for you. Search for WCF Data Services examples. What language are you thinking of using?
There is a complex type Address in this sample: https://aspnet.codeplex.com/SourceControl/latest#Samples/WebApi/OData/v4/ODataCamelCaseSample/
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