-- 检查并修复数据库中的旧图片URL
-- 2026-01-25

-- 1. 检查banner表中的示例数据
SELECT * FROM banner WHERE image_url LIKE '%example.com%';

-- 2. 检查所有表中包含旧URL的记录
-- 检查service表
SELECT id, name, image FROM service WHERE image LIKE '%localhost:8080%' OR image LIKE '%:8080/uploads%';

-- 检查banner表
SELECT id, title, image_url FROM banner WHERE image_url LIKE '%localhost:8080%' OR image_url LIKE '%:8080/uploads%';

-- 检查learning_record表
SELECT id, images, videos FROM learning_record WHERE images LIKE '%localhost:8080%' OR images LIKE '%:8080/uploads%';

-- 检查teacher表
SELECT id, teacher_name, avatar FROM teacher WHERE avatar LIKE '%localhost:8080%' OR avatar LIKE '%:8080/uploads%';

-- 检查student表
SELECT id, student_name, avatar FROM student WHERE avatar LIKE '%localhost:8080%' OR avatar LIKE '%:8080/uploads%';

-- 3. 修复banner表的示例数据(如果存在)
UPDATE banner 
SET image_url = 'https://px.ddn-ai.cloud/uploads/default_banner.jpg' 
WHERE image_url LIKE '%example.com%';

-- 4. 说明：旧的URL格式需要手动处理
-- 旧格式: http://localhost:8080/uploads/images/2026/01/08/xxx.png
-- 新格式: https://px.ddn-ai.cloud/uploads/20260125_xxx.png
-- 
-- 由于文件名格式不同,无法自动批量替换
-- 建议:
-- 1. 重新上传重要图片
-- 2. 或者手动迁移旧图片到新目录并更新URL