You process an ADO.NET Provider for Host Files provider against a z/OS dataset record. If the provider contains a SELECT statement that contains a discriminated union, the provider fails.
In this situation, you receive no error message.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Article ID: 4023739 - Last Review: 2017, മേയ് 22 - Revision: 5