From 5dec738d4757aa056f32d2471cf93e376b5f5d30 Mon Sep 17 00:00:00 2001
From: ltran-mdb2 <143426234+ltran-mdb2@users.noreply.github.com>
Date: Tue, 6 Feb 2024 13:39:56 -0500
Subject: [PATCH] DOCSP-36128 updating lookup performance (#6139) (#6253)

* DOCSP-36128 updating lookup performance

* DOCSP-36128 updating lookup performance
---
 source/reference/operator/aggregation/lookup.txt | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/source/reference/operator/aggregation/lookup.txt b/source/reference/operator/aggregation/lookup.txt
index 481672d1ddb..e7fac0b04ce 100644
--- a/source/reference/operator/aggregation/lookup.txt
+++ b/source/reference/operator/aggregation/lookup.txt
@@ -488,13 +488,9 @@ different ``$lookup`` operations.
 
      - .. _uncorrelated-subqueries-performance:
      
-       - An index on the foreign collection cannot support uncorrelated
-         subqueries.
-      
-       - To improve performance for uncorrelated subqueries, use generic
-         indexing strategies and query optimization techniques. For
-         example, add appropriate indexes to support aggregation stages
-         before ``$lookup``.
+       - ``$lookup`` operations that contain uncorrelated subqueries
+         perform better when the inner pipeline can reference an
+         index of the foreign collection.
 
        - MongoDB only needs to run the ``$lookup`` subquery once before
          caching the query because there is no relationship between the