made optimization (#1289)

Azure · Mar 23, 2020 · 81a3208 · 81a3208
1 parent 37d054b
commit 81a3208
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/.../src/Query/Core/ExecutionContext/OrderBy/CosmosOrderByItemQueryExecutionContext.Resume.cs b/.../src/Query/Core/ExecutionContext/OrderBy/CosmosOrderByItemQueryExecutionContext.Resume.cs
@@ -23,6 +23,8 @@ namespace Microsoft.Azure.Cosmos.Query.Core.ExecutionContext.OrderBy
 
     internal sealed partial class CosmosOrderByItemQueryExecutionContext : CosmosCrossPartitionQueryExecutionContext
     {
+        private const string TrueFilter = "true";
+
         private static class Expressions
         {
             public const string LessThan = "<";
@@ -599,7 +601,9 @@ private static (string leftFilter, string targetFilter, string rightFilter) GetF
                 }
             }
 
-            return (left.ToString(), target.ToString(), right.ToString());
+            // For the target filter we can make an optimization to just return "true",
+            // since we already have the backend continuation token to resume with.
+            return (left.ToString(), TrueFilter, right.ToString());
         }
 
         private readonly struct OrderByInitInfo