From d01617e2bc720b33b31636bfad20c4b52d96f203 Mon Sep 17 00:00:00 2001
From: Hyungi Ahn <hyungiahn@Hyungiui-MacBookPro.local>
Date: Tue, 14 Apr 2026 15:30:06 +0900
Subject: [PATCH] =?UTF-8?q?fix(library):=20=EB=A7=88=EC=9D=B4=EA=B7=B8?=
 =?UTF-8?q?=EB=A0=88=EC=9D=B4=EC=85=98=20asyncpg=20multiple=20statement=20?=
 =?UTF-8?q?=EC=97=90=EB=9F=AC=20=EC=88=98=EC=A0=95?=
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asyncpg는 prepared statement에 여러 명령을 넣을 수 없음.
CREATE TYPE + ALTER TABLE을 단일 DO $$ 블록으로 합침.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---
 migrations/115_doc_purpose.sql | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/migrations/115_doc_purpose.sql b/migrations/115_doc_purpose.sql
index 790369b..e7994ba 100644
--- a/migrations/115_doc_purpose.sql
+++ b/migrations/115_doc_purpose.sql
@@ -1,5 +1,10 @@
 -- 문서 용도 구분: business(업무용) | knowledge(참조용)
--- 기존 문서는 NULL → AI 재분류 시 점진 채움
--- 우선순위: 수동 수정 > 업로드 시 명시값 > AI 추론
-CREATE TYPE document_purpose AS ENUM ('business', 'knowledge');
-ALTER TABLE documents ADD COLUMN doc_purpose document_purpose;
+DO $$
+BEGIN
+  IF NOT EXISTS (SELECT 1 FROM pg_type WHERE typname = 'document_purpose') THEN
+    CREATE TYPE document_purpose AS ENUM ('business', 'knowledge');
+  END IF;
+  IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_name='documents' AND column_name='doc_purpose') THEN
+    ALTER TABLE documents ADD COLUMN doc_purpose document_purpose;
+  END IF;
+END $$;