Query: Combine QueryingEnumerable for regular and non composed FromSq… #16029
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⏱ on @roji to run some perfs |
| @@ -104,6 +106,47 @@ public async ValueTask<bool> MoveNextAsync() | |||
| _relationalQueryContext.CommandLogger, | |||
| _cancellationToken); | |||
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| if (selectExpression.IsNonComposedFromSql()) | |||
| { | |||
| var projection = _selectExpression.Projection.ToList(); | |||
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A possible optimization would be to have a non-allocating fast mode that just compares the column names and if they are already in the expected order doesn't create an index array otherwise it falls back to the remapping logic.
But we should measure whether this would be worth it. The most affected scenario would be queries that only return a single row.
AndriySvyryd
approved these changes
Jun 11, 2019
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…l case