Pavel Tupitsyn created IGNITE-4460:
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Summary: .NET: Unhelpful error message for same-table SelectMany
in LINQ
Key: IGNITE-4460
URL: https://issues.apache.org/jira/browse/IGNITE-4460
Project: Ignite
Issue Type: Bug
Components: platforms
Reporter: Pavel Tupitsyn
Priority: Trivial
Fix For: 2.1
The following LINQ is not supported ({{RegionToRole}} is a collection, which is
not understood by SQL):
{code}
users.Where(w => w.Value.ID == userId && !w.Value.IsDeleted)
.SelectMany(sm => sm.Value.RegionToRole)
{code}
However, LINQ engine proceeds to generate an invalid query, which fails later
in SQL engine:
{code}
Failed to parse query: select _T0._key, _T0._val from "User".User as _T0 ,
"User".User as _T0 where ...
{code}
We should detect invalid LINQ early and throw an error with explanation.
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