Merge pull request #416 from DataObjects-NET/7.1-decimal-sum-translation-issue

Addresses IndexOutOfRangeException on translation of certain queries with aggregates

Author: alex-kulakov

ChangeLog/7.1.4_dev.txt

@@ -0,0 +1 @@
+[main] Addressed IndexOutOfRangeException on translation of certain queries with aggregates

Orm/Xtensive.Orm.PostgreSql/Orm.Providers.PostgreSql/DomainHandler.cs

@@ -9,6 +9,7 @@
 using System.Linq;
 using Xtensive.Core;
 using Xtensive.Orm.Rse.Compilation;
+using Xtensive.Orm.Rse.Transformation;
 
 namespace Xtensive.Orm.Providers.PostgreSql
 {
@@ -21,6 +22,12 @@ public class DomainHandler : Providers.DomainHandler
     protected override ICompiler CreateCompiler(CompilerConfiguration configuration) =>
       new SqlCompiler(Handlers, configuration);
 
+    protected override IPreCompiler CreatePreCompiler(CompilerConfiguration configuration)
+    {
+      var decimalAggregateCorrector = new AggregateOverDecimalColumnCorrector(Handlers.Domain.Model);
+      return new CompositePreCompiler(decimalAggregateCorrector, base.CreatePreCompiler(configuration));
+    }
+
     /// <inheritdoc/>
     protected override IEnumerable<Type> GetProviderCompilerContainers()
     {