From 38057f0d2e13288f42f289ad2347989486d513bb Mon Sep 17 00:00:00 2001
From: Hao Chen <haoch@users.noreply.github.com>
Date: Sun, 18 Jun 2023 17:34:53 -0700
Subject: [PATCH] Fix latest clickhouse vector schema change  (#6385)

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Fixes https://github.com/hwchase17/langchain/issues/6208

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Fixes # (issue)

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---
 langchain/vectorstores/clickhouse.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/langchain/vectorstores/clickhouse.py b/langchain/vectorstores/clickhouse.py
index ed179c8b..62c3a943 100644
--- a/langchain/vectorstores/clickhouse.py
+++ b/langchain/vectorstores/clickhouse.py
@@ -68,7 +68,7 @@ class ClickhouseSettings(BaseSettings):
 
     index_type: str = "annoy"
     # Annoy supports L2Distance and cosineDistance.
-    index_param: Optional[Union[List, Dict]] = [100, "'L2Distance'"]
+    index_param: Optional[Union[List, Dict]] = ["'L2Distance'", 100]
     index_query_params: Dict[str, str] = {}
 
     column_map: Dict[str, str] = {