From 33cac9bebe44edfde8970b336fc3a615758afafe Mon Sep 17 00:00:00 2001
From: infra <mukil@langchain.dev>
Date: Fri, 26 Sep 2025 17:51:09 -0400
Subject: [PATCH 1/3] docs: add new ch setting

---
 src/langsmith/self-host-external-clickhouse.mdx | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/langsmith/self-host-external-clickhouse.mdx b/src/langsmith/self-host-external-clickhouse.mdx
index 1f2ab4856..414fbdfa3 100644
--- a/src/langsmith/self-host-external-clickhouse.mdx
+++ b/src/langsmith/self-host-external-clickhouse.mdx
@@ -43,6 +43,7 @@ Additionally, sensitive information can be configured to be not stored in Clickh
       <materialize_ttl_after_modify>0</materialize_ttl_after_modify> # Disable TTL materialization after modify
       <wait_for_async_insert_timeout>120</wait_for_async_insert_timeout> # Set the timeout for waiting for async insert
       <lightweight_deletes_sync>0</lightweight_deletes_sync> # Disable lightweight deletes sync
+      <allow_materialized_view_with_bad_select>1</allow_materialized_view_with_bad
   </default>
 </profiles>
 ```

From 72fe74e5369318534a62157bdaed7d8b85207803 Mon Sep 17 00:00:00 2001
From: langchain-infra <mukil@langchain.dev>
Date: Fri, 26 Sep 2025 18:12:13 -0400
Subject: [PATCH 2/3] Update src/langsmith/self-host-external-clickhouse.mdx

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
---
 src/langsmith/self-host-external-clickhouse.mdx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/langsmith/self-host-external-clickhouse.mdx b/src/langsmith/self-host-external-clickhouse.mdx
index 414fbdfa3..ae90227b3 100644
--- a/src/langsmith/self-host-external-clickhouse.mdx
+++ b/src/langsmith/self-host-external-clickhouse.mdx
@@ -43,7 +43,7 @@ Additionally, sensitive information can be configured to be not stored in Clickh
       <materialize_ttl_after_modify>0</materialize_ttl_after_modify> # Disable TTL materialization after modify
       <wait_for_async_insert_timeout>120</wait_for_async_insert_timeout> # Set the timeout for waiting for async insert
       <lightweight_deletes_sync>0</lightweight_deletes_sync> # Disable lightweight deletes sync
-      <allow_materialized_view_with_bad_select>1</allow_materialized_view_with_bad
+      <allow_materialized_view_with_bad_select>1</allow_materialized_view_with_bad_select> # Allow materialized views with problematic SELECT statements
   </default>
 </profiles>
 ```

From bd13f22a5b8f4912aace8b01341ff2304d6194fb Mon Sep 17 00:00:00 2001
From: langchain-infra <mukil@langchain.dev>
Date: Fri, 26 Sep 2025 18:13:04 -0400
Subject: [PATCH 3/3] Update comment for
 allow_materialized_view_with_bad_select

Clarify comment for allow_materialized_view_with_bad_select setting.
---
 src/langsmith/self-host-external-clickhouse.mdx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/langsmith/self-host-external-clickhouse.mdx b/src/langsmith/self-host-external-clickhouse.mdx
index ae90227b3..b68c752e3 100644
--- a/src/langsmith/self-host-external-clickhouse.mdx
+++ b/src/langsmith/self-host-external-clickhouse.mdx
@@ -43,7 +43,7 @@ Additionally, sensitive information can be configured to be not stored in Clickh
       <materialize_ttl_after_modify>0</materialize_ttl_after_modify> # Disable TTL materialization after modify
       <wait_for_async_insert_timeout>120</wait_for_async_insert_timeout> # Set the timeout for waiting for async insert
       <lightweight_deletes_sync>0</lightweight_deletes_sync> # Disable lightweight deletes sync
-      <allow_materialized_view_with_bad_select>1</allow_materialized_view_with_bad_select> # Allow materialized views with problematic SELECT statements
+      <allow_materialized_view_with_bad_select>1</allow_materialized_view_with_bad_select> # Allow materialized views with legacy SELECT statements that cause CH to fail
   </default>
 </profiles>
 ```