-- ===================================================================
-- 消息系统测试数据生成脚本（简化版）
-- 适用于运动训练监测与AI评估平台
-- 教师ID: 7bf7378e-a027-473e-97ac-3460ed3f170a
-- 学生ID: eed3824b-bba1-4309-8048-19d17367c084
-- ===================================================================

-- 1. 清理现有测试数据
DELETE FROM ak_message_recipients 
WHERE message_id IN (
    SELECT id FROM ak_messages 
    WHERE metadata->>'test_data' = 'true'
);

DELETE FROM ak_messages 
WHERE metadata->>'test_data' = 'true';

DELETE FROM ak_message_group_members 
WHERE group_id IN (
    SELECT id FROM ak_message_groups 
    WHERE name LIKE '%测试%' OR name LIKE '%训练群%' OR name LIKE '%交流群%'
);

DELETE FROM ak_message_groups 
WHERE name LIKE '%测试%' OR name LIKE '%训练群%' OR name LIKE '%交流群%';

-- 2. 创建测试群组
INSERT INTO ak_message_groups (
    id, name, description, group_type, owner_id, is_public, member_limit
) VALUES (
    'f47ac10b-58cc-4372-a567-0e02b2c3d479',
    '高一(1)班运动训练群',
    '高一(1)班运动训练讨论群',
    'class',
    '7bf7378e-a027-473e-97ac-3460ed3f170a',
    false,
    50
);

INSERT INTO ak_message_groups (
    id, name, description, group_type, owner_id, is_public, member_limit
) VALUES (
    'a1b2c3d4-e5f6-7890-abcd-ef1234567890',
    '师生交流群',
    '教师与学生的日常交流群组',
    'normal',
    '7bf7378e-a027-473e-97ac-3460ed3f170a',
    false,
    100
);

-- 3. 添加群组成员
INSERT INTO ak_message_group_members (
    group_id, user_id, role, status, nickname, notification_enabled
) VALUES 
('f47ac10b-58cc-4372-a567-0e02b2c3d479', '7bf7378e-a027-473e-97ac-3460ed3f170a', 'owner', 'active', '李老师', true),
('f47ac10b-58cc-4372-a567-0e02b2c3d479', 'eed3824b-bba1-4309-8048-19d17367c084', 'member', 'active', '张同学', true),
('a1b2c3d4-e5f6-7890-abcd-ef1234567890', '7bf7378e-a027-473e-97ac-3460ed3f170a', 'owner', 'active', '李老师', true),
('a1b2c3d4-e5f6-7890-abcd-ef1234567890', 'eed3824b-bba1-4309-8048-19d17367c084', 'member', 'active', '张同学', true);

-- 4. 创建系统欢迎消息
INSERT INTO ak_messages (
    id, message_type_id, sender_type, sender_name,
    receiver_type, receiver_id, title, content,
    priority, metadata, created_at
) VALUES (
    gen_random_uuid(),
    (SELECT id FROM ak_message_types WHERE code = 'system'),
    'system', '系统',
    'user', 'eed3824b-bba1-4309-8048-19d17367c084',
    '欢迎使用运动训练平台！',
    '欢迎来到运动训练监测平台！您可以在这里记录训练数据、查看AI分析报告、与老师同学交流。祝您运动愉快！',
    100,
    '{"test_data": "true", "welcome_message": true}',
    now() - INTERVAL '2 days'
);

-- 为系统消息创建接收记录
INSERT INTO ak_message_recipients (
    message_id, recipient_type, recipient_id, status, delivered_at, read_at
) VALUES (
    (SELECT id FROM ak_messages WHERE title = '欢迎使用运动训练平台！' AND metadata->>'test_data' = 'true'),
    'user', 'eed3824b-bba1-4309-8048-19d17367c084', 
    'read', now() - INTERVAL '2 days', now() - INTERVAL '1 day'
);

-- 5. 创建设备连接消息
INSERT INTO ak_messages (
    id, message_type_id, sender_type, sender_id, sender_name,
    receiver_type, receiver_id, title, content,
    priority, device_data, metadata, created_at
) VALUES (
    gen_random_uuid(),
    (SELECT id FROM ak_message_types WHERE code = 'device'),
    'device', gen_random_uuid(), '智能手环Pro',
    'user', 'eed3824b-bba1-4309-8048-19d17367c084',
    '设备连接成功',
    '您的智能手环Pro已成功连接，电量85%，可以开始记录运动数据了。',
    80,
    '{"device_name": "智能手环Pro", "battery_level": 85, "firmware_version": "2.1.3"}',
    '{"test_data": "true", "device_type": "wearable"}',
    now() - INTERVAL '1 day'
);

-- 为设备消息创建接收记录
INSERT INTO ak_message_recipients (
    message_id, recipient_type, recipient_id, status, delivered_at, read_at
) VALUES (
    (SELECT id FROM ak_messages WHERE title = '设备连接成功' AND metadata->>'test_data' = 'true'),
    'user', 'eed3824b-bba1-4309-8048-19d17367c084',
    'read', now() - INTERVAL '1 day', now() - INTERVAL '20 hours'
);

-- 6. 创建设备低电量警告（未读）
INSERT INTO ak_messages (
    id, message_type_id, sender_type, sender_id, sender_name,
    receiver_type, receiver_id, title, content,
    priority, is_urgent, device_data, metadata, created_at
) VALUES (
    gen_random_uuid(),
    (SELECT id FROM ak_message_types WHERE code = 'device'),
    'device', gen_random_uuid(), '智能手环Pro',
    'user', 'eed3824b-bba1-4309-8048-19d17367c084',
    '⚠️ 设备电量不足',
    '您的智能手环Pro电量仅剩15%，请及时充电以确保正常使用。',
    85, true,
    '{"device_name": "智能手环Pro", "battery_level": 15, "estimated_time_left": "2小时"}',
    '{"test_data": "true", "alert_type": "low_battery"}',
    now() - INTERVAL '2 hours'
);

-- 为低电量警告创建未读接收记录
INSERT INTO ak_message_recipients (
    message_id, recipient_type, recipient_id, status, delivered_at
) VALUES (
    (SELECT id FROM ak_messages WHERE title = '⚠️ 设备电量不足' AND metadata->>'test_data' = 'true'),
    'user', 'eed3824b-bba1-4309-8048-19d17367c084',
    'delivered', now() - INTERVAL '2 hours'
);

-- 7. 创建训练完成通知
INSERT INTO ak_messages (
    id, message_type_id, sender_type, sender_name,
    receiver_type, receiver_id, title, content,
    priority, metadata, created_at
) VALUES (
    gen_random_uuid(),
    (SELECT id FROM ak_message_types WHERE code = 'training'),
    'system', '训练助手',
    'user', 'eed3824b-bba1-4309-8048-19d17367c084',
    '🎉 训练完成！',
    '恭喜完成跑步训练！用时25分钟，消耗180卡路里，步数3250步，平均心率145 bpm。您的表现很棒，继续保持！',
    70,
    '{"test_data": "true", "activity_type": "running", "duration": 25, "calories": 180, "steps": 3250}',
    now() - INTERVAL '3 hours'
);

-- 为训练消息创建接收记录
INSERT INTO ak_message_recipients (
    message_id, recipient_type, recipient_id, status, delivered_at, read_at
) VALUES (
    (SELECT id FROM ak_messages WHERE title = '🎉 训练完成！' AND metadata->>'test_data' = 'true'),
    'user', 'eed3824b-bba1-4309-8048-19d17367c084',
    'read', now() - INTERVAL '3 hours', now() - INTERVAL '2 hours'
);

-- 8. 创建教师发布作业通知
INSERT INTO ak_messages (
    id, message_type_id, sender_type, sender_id, sender_name,
    receiver_type, receiver_id, title, content,
    priority, expires_at, metadata, created_at
) VALUES (
    gen_random_uuid(),
    (SELECT id FROM ak_message_types WHERE code = 'assignment'),
    'user', '7bf7378e-a027-473e-97ac-3460ed3f170a', '李老师',
    'user', 'eed3824b-bba1-4309-8048-19d17367c084',
    '新作业：每日运动打卡',
    '同学们好！本周的运动作业已发布：每天完成30分钟有氧运动，记录心率和步数数据。截止时间：本周日23:59。请按时完成并上传数据。',
    75,
    '2025-06-22 23:59:00',
    '{"test_data": "true", "assignment_id": "homework_001", "subject": "体育"}',
    now() - INTERVAL '1 day'
);

-- 为作业通知创建接收记录
INSERT INTO ak_message_recipients (
    message_id, recipient_type, recipient_id, status, delivered_at, read_at
) VALUES (
    (SELECT id FROM ak_messages WHERE title = '新作业：每日运动打卡' AND metadata->>'test_data' = 'true'),
    'user', 'eed3824b-bba1-4309-8048-19d17367c084',
    'read', now() - INTERVAL '1 day', now() - INTERVAL '18 hours'
);

-- 9. 创建成就解锁通知（未读）
INSERT INTO ak_messages (
    id, message_type_id, sender_type, sender_name,
    receiver_type, receiver_id, title, content,
    priority, metadata, created_at
) VALUES (
    gen_random_uuid(),
    (SELECT id FROM ak_message_types WHERE code = 'achievement'),
    'system', '成就系统',
    'user', 'eed3824b-bba1-4309-8048-19d17367c084',
    '🏆 恭喜解锁新成就！',
    '恭喜您解锁了"坚持不懈"成就！连续7天完成运动打卡，获得50积分奖励。继续努力，向更高目标前进！',
    50,
    '{"test_data": "true", "achievement_name": "坚持不懈", "points": 50, "days_streak": 7}',
    now() - INTERVAL '6 hours'
);

-- 为成就通知创建未读接收记录
INSERT INTO ak_message_recipients (
    message_id, recipient_type, recipient_id, status, delivered_at
) VALUES (
    (SELECT id FROM ak_messages WHERE title = '🏆 恭喜解锁新成就！' AND metadata->>'test_data' = 'true'),
    'user', 'eed3824b-bba1-4309-8048-19d17367c084',
    'delivered', now() - INTERVAL '6 hours'
);

-- 10. 创建教师群组消息
INSERT INTO ak_messages (
    id, message_type_id, sender_type, sender_id, sender_name,
    receiver_type, receiver_id, content,
    priority, conversation_id, metadata, created_at
) VALUES (
    gen_random_uuid(),
    (SELECT id FROM ak_message_types WHERE code = 'chat'),
    'user', '7bf7378e-a027-473e-97ac-3460ed3f170a', '李老师',
    'group', 'f47ac10b-58cc-4372-a567-0e02b2c3d479',
    '同学们，下周一我们将进行体能测试，请大家提前做好准备。测试项目包括：50米跑、立定跳远、引体向上。有问题随时问我。',
    90, 'f47ac10b-58cc-4372-a567-0e02b2c3d479',
    '{"test_data": "true", "group_message": true}',
    now() - INTERVAL '4 hours'
);

-- 为群组消息创建接收记录
INSERT INTO ak_message_recipients (
    message_id, recipient_type, recipient_id, status, delivered_at, read_at
) VALUES 
((SELECT id FROM ak_messages WHERE content LIKE '%体能测试%' AND metadata->>'test_data' = 'true'), 
 'user', 'eed3824b-bba1-4309-8048-19d17367c084', 
 'read', now() - INTERVAL '4 hours', now() - INTERVAL '3 hours'),
((SELECT id FROM ak_messages WHERE content LIKE '%体能测试%' AND metadata->>'test_data' = 'true'), 
 'user', '7bf7378e-a027-473e-97ac-3460ed3f170a', 
 'read', now() - INTERVAL '4 hours', now() - INTERVAL '4 hours');

-- 11. 创建学生回复群组消息
INSERT INTO ak_messages (
    id, message_type_id, sender_type, sender_id, sender_name,
    receiver_type, receiver_id, content,
    priority, conversation_id, parent_message_id, metadata, created_at
) VALUES (
    gen_random_uuid(),
    (SELECT id FROM ak_message_types WHERE code = 'chat'),
    'user', 'eed3824b-bba1-4309-8048-19d17367c084', '张同学',
    'group', 'f47ac10b-58cc-4372-a567-0e02b2c3d479',
    '好的老师，我会认真准备的！请问引体向上有什么技巧吗？',
    90, 'f47ac10b-58cc-4372-a567-0e02b2c3d479',
    (SELECT id FROM ak_messages WHERE content LIKE '%体能测试%' AND metadata->>'test_data' = 'true'),
    '{"test_data": "true", "group_message": true, "reply": true}',
    now() - INTERVAL '3 hours'
);

-- 为学生回复创建接收记录
INSERT INTO ak_message_recipients (
    message_id, recipient_type, recipient_id, status, delivered_at, read_at
) VALUES 
((SELECT id FROM ak_messages WHERE content LIKE '%引体向上有什么技巧%' AND metadata->>'test_data' = 'true'), 
 'user', '7bf7378e-a027-473e-97ac-3460ed3f170a', 
 'read', now() - INTERVAL '3 hours', now() - INTERVAL '2 hours'),
((SELECT id FROM ak_messages WHERE content LIKE '%引体向上有什么技巧%' AND metadata->>'test_data' = 'true'), 
 'user', 'eed3824b-bba1-4309-8048-19d17367c084', 
 'read', now() - INTERVAL '3 hours', now() - INTERVAL '3 hours');

-- 12. 创建教师私信学生（未读）
INSERT INTO ak_messages (
    id, message_type_id, sender_type, sender_id, sender_name,
    receiver_type, receiver_id, content,
    priority, metadata, created_at
) VALUES (
    gen_random_uuid(),
    (SELECT id FROM ak_message_types WHERE code = 'chat'),
    'user', '7bf7378e-a027-473e-97ac-3460ed3f170a', '李老师',
    'user', 'eed3824b-bba1-4309-8048-19d17367c084',
    '张同学，我看到你最近的运动数据很不错，心率控制得很好。继续保持这个节奏，相信你的体能会有很大提升。',
    90,
    '{"test_data": "true", "private_message": true}',
    now() - INTERVAL '1 hour'
);

-- 为私信创建未读接收记录
INSERT INTO ak_message_recipients (
    message_id, recipient_type, recipient_id, status, delivered_at
) VALUES (
    (SELECT id FROM ak_messages WHERE content LIKE '%运动数据很不错%' AND metadata->>'test_data' = 'true'),
    'user', 'eed3824b-bba1-4309-8048-19d17367c084',
    'delivered', now() - INTERVAL '1 hour'
);

-- 13. 创建系统公告
INSERT INTO ak_messages (
    id, message_type_id, sender_type, sender_name,
    receiver_type, title, content,
    priority, is_broadcast, metadata, created_at
) VALUES (
    gen_random_uuid(),
    (SELECT id FROM ak_message_types WHERE code = 'announcement'),
    'system', '运动平台',
    'broadcast',
    '平台升级通知',
    '各位用户，运动训练平台将于本周六凌晨2:00-4:00进行系统升级，届时将暂停服务。升级后将新增AI运动分析功能，敬请期待！',
    95, true,
    '{"test_data": "true", "maintenance": true, "upgrade": true}',
    now() - INTERVAL '12 hours'
);

-- 为公告创建接收记录（广播消息）
INSERT INTO ak_message_recipients (
    message_id, recipient_type, recipient_id, status, delivered_at, read_at
) VALUES 
((SELECT id FROM ak_messages WHERE title = '平台升级通知' AND metadata->>'test_data' = 'true'), 
 'user', '7bf7378e-a027-473e-97ac-3460ed3f170a', 
 'read', now() - INTERVAL '12 hours', now() - INTERVAL '11 hours'),
((SELECT id FROM ak_messages WHERE title = '平台升级通知' AND metadata->>'test_data' = 'true'), 
 'user', 'eed3824b-bba1-4309-8048-19d17367c084', 
 'read', now() - INTERVAL '12 hours', now() - INTERVAL '10 hours');

-- 14. 创建运动提醒（未读）
INSERT INTO ak_messages (
    id, message_type_id, sender_type, sender_name,
    receiver_type, receiver_id, title, content,
    priority, scheduled_at, metadata, created_at
) VALUES (
    gen_random_uuid(),
    (SELECT id FROM ak_message_types WHERE code = 'reminder'),
    'system', '运动助手',
    'user', 'eed3824b-bba1-4309-8048-19d17367c084',
    '⏰ 运动时间到了！',
    '根据您的运动计划，现在是跑步时间。建议运动30分钟，注意热身和拉伸。今天天气不错，适合户外运动！',
    65,
    now() - INTERVAL '30 minutes',
    '{"test_data": "true", "reminder_type": "exercise", "activity": "running"}',
    now() - INTERVAL '30 minutes'
);

-- 为提醒消息创建未读接收记录
INSERT INTO ak_message_recipients (
    message_id, recipient_type, recipient_id, status, delivered_at
) VALUES (
    (SELECT id FROM ak_messages WHERE title = '⏰ 运动时间到了！' AND metadata->>'test_data' = 'true'),
    'user', 'eed3824b-bba1-4309-8048-19d17367c084',
    'delivered', now() - INTERVAL '30 minutes'
);

-- 15. 创建心率异常警报
INSERT INTO ak_messages (
    id, message_type_id, sender_type, sender_id, sender_name,
    receiver_type, receiver_id, title, content,
    priority, is_urgent, device_data, metadata, created_at
) VALUES (
    gen_random_uuid(),
    (SELECT id FROM ak_message_types WHERE code = 'alert'),
    'device', gen_random_uuid(), '智能手环Pro',
    'user', 'eed3824b-bba1-4309-8048-19d17367c084',
    '⚠️ 心率异常警报',
    '检测到您的心率持续偏高（185 bpm），已超过安全范围。建议立即停止运动，休息并观察。如有不适请及时就医。',
    99, true,
    '{"device_name": "智能手环Pro", "heart_rate": 185, "safe_range": "60-180"}',
    '{"test_data": "true", "alert_type": "heart_rate", "severity": "high"}',
    now() - INTERVAL '10 minutes'
);

-- 为心率警报创建已读接收记录
INSERT INTO ak_message_recipients (
    message_id, recipient_type, recipient_id, status, delivered_at, read_at
) VALUES (
    (SELECT id FROM ak_messages WHERE title = '⚠️ 心率异常警报' AND metadata->>'test_data' = 'true'),
    'user', 'eed3824b-bba1-4309-8048-19d17367c084',
    'read', now() - INTERVAL '10 minutes', now() - INTERVAL '8 minutes'
);

-- 16. 创建社交点赞消息
INSERT INTO ak_messages (
    id, message_type_id, sender_type, sender_id, sender_name,
    receiver_type, receiver_id, title, content,
    priority, metadata, created_at
) VALUES (
    gen_random_uuid(),
    (SELECT id FROM ak_message_types WHERE code = 'social'),
    'user', '7bf7378e-a027-473e-97ac-3460ed3f170a', '李老师',
    'user', 'eed3824b-bba1-4309-8048-19d17367c084',
    '👍 老师为您点赞了',
    '李老师为您的运动记录"今日跑步5公里"点赞了，并评论："坚持得很好，继续加油！"',
    60,
    '{"test_data": "true", "social_action": "like", "post_id": "post_001"}',
    now() - INTERVAL '5 hours'
);

-- 为社交消息创建接收记录
INSERT INTO ak_message_recipients (
    message_id, recipient_type, recipient_id, status, delivered_at, read_at
) VALUES (
    (SELECT id FROM ak_messages WHERE title = '👍 老师为您点赞了' AND metadata->>'test_data' = 'true'),
    'user', 'eed3824b-bba1-4309-8048-19d17367c084',
    'read', now() - INTERVAL '5 hours', now() - INTERVAL '4 hours'
);

-- 17. 更新消息统计
UPDATE ak_messages 
SET 
    total_recipients = (
        SELECT COUNT(*) 
        FROM ak_message_recipients mr 
        WHERE mr.message_id = ak_messages.id
    ),
    delivered_count = (
        SELECT COUNT(*) 
        FROM ak_message_recipients mr 
        WHERE mr.message_id = ak_messages.id 
        AND mr.status IN ('delivered', 'read')
    ),
    read_count = (
        SELECT COUNT(*) 
        FROM ak_message_recipients mr 
        WHERE mr.message_id = ak_messages.id 
        AND mr.status = 'read'
    )
WHERE metadata->>'test_data' = 'true';

-- 18. 输出测试数据统计
SELECT 
    '测试数据统计' as info,
    (SELECT COUNT(*) FROM ak_messages WHERE metadata->>'test_data' = 'true') as total_messages,
    (SELECT COUNT(*) FROM ak_message_recipients mr 
     JOIN ak_messages m ON mr.message_id = m.id 
     WHERE m.metadata->>'test_data' = 'true') as total_recipients,
    (SELECT COUNT(*) FROM ak_message_recipients mr 
     JOIN ak_messages m ON mr.message_id = m.id 
     WHERE m.metadata->>'test_data' = 'true' 
       AND mr.recipient_id = 'eed3824b-bba1-4309-8048-19d17367c084'
       AND mr.status != 'read') as student_unread_count;

-- ===================================================================
-- 常用测试查询示例
-- ===================================================================

-- 查询学生的所有消息
/*
SELECT 
    m.title,
    m.content,
    mt.name as message_type,
    m.sender_name,
    mr.status,
    m.created_at,
    m.is_urgent
FROM ak_messages m
JOIN ak_message_types mt ON m.message_type_id = mt.id
JOIN ak_message_recipients mr ON m.id = mr.message_id
WHERE mr.recipient_id = 'eed3824b-bba1-4309-8048-19d17367c084'
  AND m.metadata->>'test_data' = 'true'
ORDER BY m.created_at DESC;
*/

-- 查询学生未读消息
/*
SELECT 
    m.title,
    m.content,
    mt.name as message_type,
    m.sender_name,
    m.created_at,
    m.is_urgent
FROM ak_messages m
JOIN ak_message_types mt ON m.message_type_id = mt.id
JOIN ak_message_recipients mr ON m.id = mr.message_id
WHERE mr.recipient_id = 'eed3824b-bba1-4309-8048-19d17367c084'
  AND mr.status != 'read'
  AND m.metadata->>'test_data' = 'true'
ORDER BY m.priority DESC, m.created_at DESC;
*/

-- 查询教师发送的消息
/*
SELECT 
    m.title,
    m.content,
    mt.name as message_type,
    m.receiver_type,
    m.created_at,
    m.total_recipients,
    m.read_count
FROM ak_messages m
JOIN ak_message_types mt ON m.message_type_id = mt.id
WHERE m.sender_id = '7bf7378e-a027-473e-97ac-3460ed3f170a'
  AND m.metadata->>'test_data' = 'true'
ORDER BY m.created_at DESC;
*/

-- 查询群组消息
/*
SELECT 
    m.content,
    m.sender_name,
    mg.name as group_name,
    m.created_at,
    CASE WHEN m.parent_message_id IS NOT NULL THEN '回复' ELSE '原始消息' END as message_type
FROM ak_messages m
JOIN ak_message_groups mg ON m.receiver_id = mg.id
WHERE m.receiver_type = 'group'
  AND m.metadata->>'test_data' = 'true'
ORDER BY m.created_at DESC;
*/

-- 查询设备消息
/*
SELECT 
    m.title,
    m.content,
    m.device_data,
    m.is_urgent,
    mr.status,
    m.created_at
FROM ak_messages m
JOIN ak_message_recipients mr ON m.id = mr.message_id
WHERE m.sender_type = 'device'
  AND mr.recipient_id = 'eed3824b-bba1-4309-8048-19d17367c084'
  AND m.metadata->>'test_data' = 'true'
ORDER BY m.created_at DESC;
*/

-- 查询未读消息统计
/*
SELECT 
    mt.name as message_type,
    COUNT(*) as unread_count
FROM ak_message_recipients mr
JOIN ak_messages m ON mr.message_id = m.id
JOIN ak_message_types mt ON m.message_type_id = mt.id
WHERE mr.recipient_id = 'eed3824b-bba1-4309-8048-19d17367c084'
  AND mr.status != 'read'
  AND m.metadata->>'test_data' = 'true'
GROUP BY mt.name, mt.priority
ORDER BY mt.priority DESC;
*/

-- 标记消息为已读的示例
/*
UPDATE ak_message_recipients 
SET status = 'read', read_at = now()
WHERE recipient_id = 'eed3824b-bba1-4309-8048-19d17367c084'
  AND message_id = '消息ID'
  AND status != 'read';
*/

SELECT '====================================================================' as separator
UNION ALL
SELECT '测试数据生成完成！' as info
UNION ALL
SELECT '教师ID: 7bf7378e-a027-473e-97ac-3460ed3f170a' as info
UNION ALL
SELECT '学生ID: eed3824b-bba1-4309-8048-19d17367c084' as info
UNION ALL
SELECT '班级群组ID: f47ac10b-58cc-4372-a567-0e02b2c3d479' as info
UNION ALL
SELECT '师生群组ID: a1b2c3d4-e5f6-7890-abcd-ef1234567890' as info
UNION ALL
SELECT '已创建各类型测试消息，包含已读和未读状态' as info
UNION ALL
SELECT '可使用注释中的查询语句测试各种消息场景' as info
UNION ALL
SELECT '====================================================================' as separator;