From 7f95084d7611847595ac1b1fa15a68380839664e Mon Sep 17 00:00:00 2001
From: "34047007@qq.com" <34047007@qq.com>
Date: Mon, 10 Aug 2026 17:49:57 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E6=90=9C=E7=B4=A2=20tag=20=E8=BF=87?=
 =?UTF-8?q?=E6=BB=A4=E6=94=B9=E7=94=A8=20cast(ARRAY(Uuid))=EF=BC=8C?=
 =?UTF-8?q?=E6=9D=9C=E7=BB=9D=20asyncpg=20=E6=8A=8A=20ARRAY[$n]=20?=
 =?UTF-8?q?=E6=8E=A8=E6=96=AD=E6=88=90=20text[]=20=E5=AF=BC=E8=87=B4=20uui?=
 =?UTF-8?q?d[]=20&&=20text[]=20500=EF=BC=88=E6=A0=B9=E5=9B=A0=E5=9C=A8=20y?=
 =?UTF-8?q?ear=5Fcounts=20=E5=AD=90=E6=9F=A5=E8=AF=A2=E5=A4=8D=E7=94=A8=20?=
 =?UTF-8?q?conditions=EF=BC=89?=
MIME-Version: 1.0
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---
 backend/app/services/search_engine.py | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/backend/app/services/search_engine.py b/backend/app/services/search_engine.py
index 6bdefff..d37cf62 100644
--- a/backend/app/services/search_engine.py
+++ b/backend/app/services/search_engine.py
@@ -4,7 +4,7 @@ import logging
 import re
 from datetime import datetime
 
-from sqlalchemy import String, and_, case, cast, exists, func, literal_column, not_, or_, select, text
+from sqlalchemy import ARRAY, String, Uuid, and_, case, cast, exists, func, literal_column, not_, or_, select, text
 
 logger = logging.getLogger(__name__)
 from sqlalchemy.ext.asyncio import AsyncSession
@@ -506,9 +506,11 @@ class AdvancedSearchEngine:
                 child_conds = [GlobalTag.path.like(f"{p}%") for p in paths]
                 children = (await db.execute(select(GlobalTag.id).where(or_(*child_conds)))).scalars().all()
                 all_tag_ids.update(children)
-            uids = list(all_tag_ids)
-            from sqlalchemy.dialects.postgresql import array as _pg_array, UUID as _pg_uuid
-            conditions.append(GlobalLiterature.tag_ids.overlap(_pg_array(uids, type_=_pg_uuid())))
+            uids = [_uuid.UUID(u) if isinstance(u, str) else u for u in all_tag_ids]
+            # 显式 cast 到 ARRAY(Uuid)：不依赖 _pg_array 的参数类型推断（asyncpg prepared
+            # statement 会把 ARRAY[$n] 推断成 text[]，导致 uuid[] && text[] 500）。cast 后
+            # 编译产物必带 ::uuid[]，杜绝推断漂移。
+            conditions.append(GlobalLiterature.tag_ids.overlap(cast(uids, ARRAY(Uuid))))
 
         # 发表类型（PG JSONB contains）
         if pub_types: