From e05b0473a00a7b7fdb386e3decb4bff42a2161ac Mon Sep 17 00:00:00 2001
From: Corvin Kuebler <corvin.kuebler@sap.com>
Date: Wed, 7 Feb 2024 09:00:56 +0100
Subject: [PATCH] [CALCITE-6250] Limitations of MongoDB adapter are not
 documented

Add hints with restrictions for documents/filters to howto site
---
 site/_docs/howto.md | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/site/_docs/howto.md b/site/_docs/howto.md
index a6abb4f8c17..15a7c6c3d8f 100644
--- a/site/_docs/howto.md
+++ b/site/_docs/howto.md
@@ -329,7 +329,10 @@ See the [tutorial]({{ site.baseurl }}/docs/tutorial.html).
 First, download and install Calcite,
 and <a href="https://www.mongodb.org/downloads">install MongoDB</a>.
 
-Note: you can use MongoDB from the integration test virtual machine above.
+Note:
+* You can use MongoDB from the integration test virtual machine above.
+* The MongoDB adapter is not suited for querying nested documents.
+* The MongoDB adapter currently only supports a very limited set of filter push downs.
 
 Import MongoDB's zipcode data set into MongoDB: