[IGNITE-18138] .NET: Thin 3.0: LINQ: Avoid overfetching, select only mapped columns

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0
• Component/s: platforms, thin client
• Labels: .NET LINQ ignite-3

Language

C#

• Assignee: Pavel Tupitsyn
• Reporter: Pavel Tupitsyn
• Created: 11/Nov/22 17:33
• Updated: 04/Sep/24 16:19
• Resolved: 15/Nov/22 05:43

Description

Currently, we use

SELECT *

when mapping query results to the original RecordView type (see IgniteQueryExpressionVisitor.VisitQuerySourceReference).
This potentially selects more data than required.
We should only select columns that are mapped to the specified type.

Issue Links

• fixes: IGNITE-18149 .NET: Thin 3.0: Support NotMappedAttribute
• is part of: IGNITE-17343 .NET: Thin 3.0: LINQ provider
• links to: GitHub Pull Request #1341
• links to: IGNITE-18138 .NET: LINQ: Avoid overfetching, select only mapped columns by ptupitsyn · Pull Request #1341 · apache/ignite-3