From d91126fc64ebd5d28bbd73ca4d15a9daea45c8a2 Mon Sep 17 00:00:00 2001
From: Felix Krones <92753725+felixkrones@users.noreply.github.com>
Date: Wed, 17 Jan 2024 18:10:43 +0100
Subject: [PATCH] community[patch]: missing unpack operator for or_clause in
 pgvector document filter  (#16148)

- Fix for #16146
- Adding unpack operation to "or" and "and" filter for pgvector
retriever. #
---
 libs/community/langchain_community/vectorstores/pgvector.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libs/community/langchain_community/vectorstores/pgvector.py b/libs/community/langchain_community/vectorstores/pgvector.py
index e57fb16358c..7fed642c45c 100644
--- a/libs/community/langchain_community/vectorstores/pgvector.py
+++ b/libs/community/langchain_community/vectorstores/pgvector.py
@@ -545,13 +545,13 @@ class PGVector(VectorStore):
                 self._create_filter_clause(key, sub_value)
                 for sub_value in value_case_insensitive[OR]
             ]
-            filter_by_metadata = sqlalchemy.or_(or_clauses)
+            filter_by_metadata = sqlalchemy.or_(*or_clauses)
         elif AND in map(str.lower, value):
             and_clauses = [
                 self._create_filter_clause(key, sub_value)
                 for sub_value in value_case_insensitive[AND]
             ]
-            filter_by_metadata = sqlalchemy.and_(and_clauses)
+            filter_by_metadata = sqlalchemy.and_(*and_clauses)
 
         else:
             filter_by_metadata = None