From 9520643c5cbe1e443ae62c356c21fab2cb27f1c7 Mon Sep 17 00:00:00 2001
From: Mark Carrington <MarkMpn@users.noreply.github.com>
Date: Mon, 2 Oct 2023 17:41:39 -0700
Subject: [PATCH] Fixed nested loop left outer join with no records returned
 from inner source

---
 MarkMpn.Sql4Cds.Engine/ExecutionPlan/NestedLoopNode.cs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/MarkMpn.Sql4Cds.Engine/ExecutionPlan/NestedLoopNode.cs b/MarkMpn.Sql4Cds.Engine/ExecutionPlan/NestedLoopNode.cs
index 08734d5a..c28072d8 100644
--- a/MarkMpn.Sql4Cds.Engine/ExecutionPlan/NestedLoopNode.cs
+++ b/MarkMpn.Sql4Cds.Engine/ExecutionPlan/NestedLoopNode.cs
@@ -114,7 +114,17 @@ protected override IEnumerable<Entity> ExecuteInternal(NodeExecutionContext cont
                 }
 
                 if (!hasRight && JoinType == QualifiedJoinType.LeftOuter)
+                {
+                    if (rightSchema == null)
+                    {
+                        rightSchema = RightSource.GetSchema(rightCompilationContext);
+                        mergedSchema = GetSchema(context, true);
+                        joinCondition = JoinCondition?.Compile(new ExpressionCompilationContext(context, mergedSchema, null));
+                        joinConditionContext = joinCondition == null ? null : new ExpressionExecutionContext(context);
+                    }
+
                     yield return Merge(left, leftSchema, null, rightSchema);
+                }
             }
         }