add

backend/sql/05_exchange.sql

@@ -88,8 +88,14 @@ BEGIN
         WHERE table_name = 'exchange_info_view'
     ) INTO view_exists;
 
-    -- 创建或更新视图
-    CREATE OR REPLACE VIEW exchange_info_view AS
+    -- 若视图存在，先删除（避免字段名冲突）
+    IF view_exists THEN
+        DROP VIEW exchange_info_view;
+        RAISE NOTICE '已删除旧视图 exchange_info_view';
+    END IF;
+
+    -- 重新创建视图（无冲突风险）
+    CREATE VIEW exchange_info_view AS
     SELECT 
         u.id AS exchange_id,
         n.name AS name,
@@ -99,17 +105,16 @@ BEGIN
     FROM 
         exchange u
     JOIN 
-        exchange_name n ON u.id = n.exchange_id
+        exchange_name n ON u.id = n.exchange_id AND n.deleted = FALSE
     JOIN 
-        exchange_short_name sn ON u.id = sn.exchange_id
+        exchange_short_name sn ON u.id = sn.exchange_id AND sn.deleted = FALSE
     JOIN 
-        exchange_code c ON u.id = c.exchange_id
+        exchange_code c ON u.id = c.exchange_id AND c.deleted = FALSE
     WHERE
         u.deleted = FALSE;
 
-    -- 根据视图是否已存在输出不同提示
     IF view_exists THEN
-        RAISE NOTICE '视图 exchange_info_view 已更新';
+        RAISE NOTICE '视图 exchange_info_view 已更新（删除旧视图后重建）';
     ELSE
         RAISE NOTICE '视图 exchange_info_view 已创建';
     END IF;