Important! Change NULLs behavior in ORDER BY clause

The rest of storages have nulls order similar to .NET ordering algorithm
so now Oracle v11 and above have the same order as .NET

Author: alex-kulakov

Orm/Xtensive.Orm.Oracle/Sql.Drivers.Oracle/v11/Translator.cs

@@ -7,6 +7,7 @@
 using System;
 using Xtensive.Sql.Compiler;
 using Xtensive.Sql.Ddl;
+using Xtensive.Sql.Dml;
 
 namespace Xtensive.Sql.Drivers.Oracle.v11
 {
@@ -32,6 +33,14 @@ public override string Translate(SqlCompilerContext context, SqlCreateIndex node
       return base.Translate(context, node, section);
     }
 
+    public override string Translate(SqlCompilerContext context, SqlOrder node, NodeSection section)
+    {
+      if (section == NodeSection.Exit) {
+        return node.Ascending ? "ASC NULLS FIRST" : "DESC NULLS LAST";
+      }
+      return string.Empty;
+    }
+
     public override string Translate(SqlValueType type)
     {
       // we need to explicitly specify maximum interval precision