add

backend/country/sql/05_create_info_view.sql

@@ -0,0 +1,38 @@
+\c postgres;
+
+DO $$
+DECLARE
+    view_exists BOOLEAN;
+BEGIN
+    -- 检查视图是否已存在
+    SELECT EXISTS (
+        SELECT 1 FROM information_schema.views 
+        WHERE table_name = 'country_info_view'
+    ) INTO view_exists;
+
+    -- 创建或更新视图
+    CREATE OR REPLACE VIEW country_info_view AS
+    SELECT 
+        u.id AS country_id,
+        n.name AS name,
+        c.code AS code,
+        u.deleted AS deleted
+    FROM 
+        "country" u
+    JOIN 
+        name n ON u.id = n.country_id
+    JOIN 
+        code c ON u.id = c.country_id
+    WHERE
+        u.deleted = FALSE;
+
+    -- 根据视图是否已存在输出不同提示
+    IF view_exists THEN
+        RAISE NOTICE '视图 country_info_view 已更新';
+    ELSE
+        RAISE NOTICE '视图 country_info_view 已创建';
+    END IF;
+EXCEPTION
+    WHEN OTHERS THEN
+        RAISE NOTICE '处理视图时发生错误: %', SQLERRM;
+END $$;