Initial commit of akmon project

create_health_view.sql

@@ -0,0 +1,147 @@
+-- 创建学生最新健康数据视图
+-- 如果视图已存在则先删除
+DROP VIEW IF EXISTS public.v_latest_student_health;
+
+-- 创建视图：获取每个学生的最新健康数据
+CREATE OR REPLACE VIEW public.v_latest_student_health AS
+WITH latest_measurements AS (
+    -- 获取每个用户每种传感器类型的最新记录
+    SELECT 
+        user_id,
+        sensor_type,
+        timestamp_utc,
+        value_numeric,
+        ROW_NUMBER() OVER (
+            PARTITION BY user_id, sensor_type 
+            ORDER BY timestamp_utc DESC
+        ) as rn
+    FROM public.ss_sensor_measurements
+    WHERE value_numeric IS NOT NULL
+),
+pivoted_data AS (
+    -- 将不同传感器类型的数据透视为列
+    SELECT 
+        user_id,
+        MAX(CASE WHEN sensor_type = 'temperature' AND rn = 1 THEN value_numeric END) as temperature_c,
+        MAX(CASE WHEN sensor_type = 'temperature' AND rn = 1 THEN timestamp_utc END) as temp_time,
+        MAX(CASE WHEN sensor_type = 'heart_rate' AND rn = 1 THEN value_numeric END) as heart_rate_bpm,
+        MAX(CASE WHEN sensor_type = 'heart_rate' AND rn = 1 THEN timestamp_utc END) as heart_time,
+        MAX(CASE WHEN sensor_type = 'spo2' AND rn = 1 THEN value_numeric END) as spo2_percent,
+        MAX(CASE WHEN sensor_type = 'spo2' AND rn = 1 THEN timestamp_utc END) as spo2_time,
+        MAX(CASE WHEN sensor_type = 'steps' AND rn = 1 THEN value_numeric END) as step_count,
+        MAX(CASE WHEN sensor_type = 'steps' AND rn = 1 THEN timestamp_utc END) as steps_time
+    FROM latest_measurements
+    GROUP BY user_id
+)
+-- 关联用户基本信息
+SELECT 
+    u.id as user_id,
+    u.username as name,
+    u.email as student_id,  -- 临时使用email作为student_id，您可以根据实际情况调整
+    u.avatar_url as avatar,
+    pd.temperature_c,
+    pd.temp_time,
+    pd.heart_rate_bpm,
+    pd.heart_time,
+    pd.spo2_percent,
+    pd.spo2_time,
+    pd.step_count,
+    pd.steps_time
+FROM public.ak_users u
+LEFT JOIN pivoted_data pd ON u.id = pd.user_id
+WHERE u.role = 'student';
+
+-- 给视图添加注释
+COMMENT ON VIEW public.v_latest_student_health IS '学生最新健康数据视图 - 包含每个学生的最新体温、心率、血氧、步数等数据';
+
+-- 如果ss_sensor_measurements表不存在，创建替代方案
+-- 使用专门的传感器数据表
+CREATE OR REPLACE VIEW public.v_latest_student_health_alt AS
+WITH latest_health_data AS (
+    SELECT 
+        user_id,
+        'temperature' as data_type,
+        temperature_celsius as value,
+        recorded_at as recorded_time
+    FROM public.ss_temperature 
+    WHERE user_id IS NOT NULL AND temperature_celsius IS NOT NULL
+    
+    UNION ALL
+    
+    SELECT 
+        user_id,
+        'heart_rate' as data_type,
+        heart_rate_bpm as value,
+        recorded_at as recorded_time
+    FROM public.ss_heart_rate 
+    WHERE user_id IS NOT NULL AND heart_rate_bpm IS NOT NULL
+    
+    UNION ALL
+    
+    SELECT 
+        user_id,
+        'spo2' as data_type,
+        spo2_percentage as value,
+        recorded_at as recorded_time
+    FROM public.ss_spo2 
+    WHERE user_id IS NOT NULL AND spo2_percentage IS NOT NULL
+    
+    UNION ALL
+    
+    SELECT 
+        user_id,
+        'steps' as data_type,
+        step_count as value,
+        recorded_at as recorded_time
+    FROM public.ss_steps 
+    WHERE user_id IS NOT NULL AND step_count IS NOT NULL
+),
+latest_by_type AS (
+    SELECT 
+        user_id,
+        data_type,
+        value,
+        recorded_time,
+        ROW_NUMBER() OVER (
+            PARTITION BY user_id, data_type 
+            ORDER BY recorded_time DESC
+        ) as rn
+    FROM latest_health_data
+),
+pivoted_alt AS (
+    SELECT 
+        user_id,
+        MAX(CASE WHEN data_type = 'temperature' AND rn = 1 THEN value END) as temperature_c,
+        MAX(CASE WHEN data_type = 'temperature' AND rn = 1 THEN recorded_time END) as temp_time,
+        MAX(CASE WHEN data_type = 'heart_rate' AND rn = 1 THEN value END) as heart_rate_bpm,
+        MAX(CASE WHEN data_type = 'heart_rate' AND rn = 1 THEN recorded_time END) as heart_time,
+        MAX(CASE WHEN data_type = 'spo2' AND rn = 1 THEN value END) as spo2_percent,
+        MAX(CASE WHEN data_type = 'spo2' AND rn = 1 THEN recorded_time END) as spo2_time,
+        MAX(CASE WHEN data_type = 'steps' AND rn = 1 THEN value END) as step_count,
+        MAX(CASE WHEN data_type = 'steps' AND rn = 1 THEN recorded_time END) as steps_time
+    FROM latest_by_type
+    GROUP BY user_id
+)
+SELECT 
+    u.id as user_id,
+    u.username as name,
+    u.email as student_id,
+    u.avatar_url as avatar,
+    pa.temperature_c,
+    pa.temp_time,
+    pa.heart_rate_bpm,
+    pa.heart_time,
+    pa.spo2_percent,
+    pa.spo2_time,
+    pa.step_count,
+    pa.steps_time
+FROM public.ak_users u
+LEFT JOIN pivoted_alt pa ON u.id = pa.user_id
+WHERE u.role = 'student';
+
+-- 查看当前系统中存在哪些传感器相关的表
+SELECT table_name 
+FROM information_schema.tables 
+WHERE table_schema = 'public' 
+    AND (table_name LIKE '%sensor%' OR table_name LIKE '%ss_%')
+ORDER BY table_name;