From ab64d2aa0a63777d65eb3e724fb1728809488f1d Mon Sep 17 00:00:00 2001
From: "34047007@qq.com" <34047007@qq.com>
Date: Mon, 10 Aug 2026 18:06:27 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E6=90=9C=E7=B4=A2=E9=A1=B5=20filter-opt?=
 =?UTF-8?q?ions=20500=20=E2=80=94=20nlm=5Fsubsets=20@>=20ARRAY[...]=20?=
 =?UTF-8?q?=E8=A1=A5=20::varchar[]=20cast=EF=BC=88varchar[]=20vs=20text[]?=
 =?UTF-8?q?=20=E7=B1=BB=E5=9E=8B=E4=B8=8D=E5=8C=B9=E9=85=8D=EF=BC=89?=
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---
 backend/app/api/v1/features.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/backend/app/api/v1/features.py b/backend/app/api/v1/features.py
index 6fd294e..cab639d 100644
--- a/backend/app/api/v1/features.py
+++ b/backend/app/api/v1/features.py
@@ -206,7 +206,7 @@ async def _load_filter_options(db: AsyncSession) -> dict:
     # 3. nlm_subsets（单次 JOIN + COUNT FILTER，代替 8 次独立查询）
     # 注：code 来自上方 NLM_SUBSET_LABELS 硬编码常量，无注入风险
     subset_filter_cols = ", ".join(
-        f'COUNT(*) FILTER (WHERE j.nlm_subsets @> ARRAY[\'{code}\']) AS "{code}"'
+        f'COUNT(*) FILTER (WHERE j.nlm_subsets @> ARRAY[\'{code}\']::varchar[]) AS "{code}"'
         for code in NLM_SUBSET_LABELS
     )
     subset_row = (await db.execute(text(f"""