[jira] [Created] (IGNITE-4388) .NET: Improve LINQ error message when aggregates are used with multiple fields

["Pavel Tupitsyn (JIRA)" <ji...@apache.org>]

Pavel Tupitsyn created IGNITE-4388:
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             Summary: .NET: Improve LINQ error message when aggregates are used with multiple fields
                 Key: IGNITE-4388
                 URL: https://issues.apache.org/jira/browse/IGNITE-4388
             Project: Ignite
          Issue Type: Improvement
          Components: platforms
    Affects Versions: 1.7, 1.8
            Reporter: Pavel Tupitsyn
            Priority: Trivial
             Fix For: 1.9


Current message is "Aggregate functions do not support multiple fields". This happens when you try to apply aggregate function (such as COUNT) to a query which selects multiple fields (select new {X, Y}). LINQ allows that, but we can't express this in SQL.

* See what Entity Framework does
* Improve error message



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