If you are using the Query Designer built in the Standalone Designer tool, it works based on Telerik Data Access and the databases listed here.
If you are referring to the Query Builder in Visual Studio Report Designer, it is actually part of VS, and issues can occur if the used .NET data provider is built with different platform target than the application (x86, anyCPU).
In both cases:
- The SQL statement and parameters can be configured manually;
- You can build data access layer, used in reports via Object/Entity/OpenAccess DataSource component. Using these data source components allows you to consume also data delivered by a data service e.g. Connecting Telerik Reporting to OData feeds.
If you need further help, feel free to open a support ticket and send us more details which report designer is tested, and the exact steps how to reproduce the problem.
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