From 7b3a9c09ca368d38b8cea44a838a79587430455a Mon Sep 17 00:00:00 2001
From: yangdx <gzdaniel@me.com>
Date: Mon, 4 Aug 2025 11:12:59 +0800
Subject: [PATCH] Fix: add missing colume to LLM cache of PostgreSQL
 implementation

---
 lightrag/kg/postgres_impl.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lightrag/kg/postgres_impl.py b/lightrag/kg/postgres_impl.py
index c30657cd..66f0dd6c 100644
--- a/lightrag/kg/postgres_impl.py
+++ b/lightrag/kg/postgres_impl.py
@@ -4053,6 +4053,7 @@ TABLES = {
                     original_prompt TEXT,
                     return_value TEXT,
                     chunk_id VARCHAR(255) NULL,
+                    cache_type VARCHAR(32),
                     create_time TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
                     update_time TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
 	                CONSTRAINT LIGHTRAG_LLM_CACHE_PK PRIMARY KEY (workspace, mode, id)