Initial commit of akmon project
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generate_sensor_demo_data.sql
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222
generate_sensor_demo_data.sql
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-- 根据现有ss_sensor_data_schema.sql创建示例数据
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-- 为学生用户生成传感器数据以供演示
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-- 首先确保表结构存在
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-- 如果还没有运行过ss_sensor_data_schema.sql，请先运行
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-- 生成示例数据
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DO $$
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DECLARE
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demo_user_id UUID;
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demo_device_id UUID;
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measurement_id UUID;
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current_time TIMESTAMPTZ;
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i INTEGER;
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BEGIN
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-- 查找第一个学生用户ID
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SELECT id INTO demo_user_id
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FROM public.ak_users
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WHERE role = 'student'
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LIMIT 1;
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-- 创建或查找一个示例设备
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SELECT id INTO demo_device_id
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FROM public.ak_devices
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LIMIT 1;
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-- 如果没有设备，创建一个示例设备
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IF demo_device_id IS NULL THEN
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INSERT INTO public.ak_devices (id, name, type, model, created_at)
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VALUES (
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uuid_generate_v4(),
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'健康监测设备',
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'health_monitor',
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'HealthTracker Pro',
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NOW()
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)
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RETURNING id INTO demo_device_id;
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RAISE NOTICE '创建了示例设备: %', demo_device_id;
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END IF;
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-- 如果找到学生用户，插入示例数据
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IF demo_user_id IS NOT NULL AND demo_device_id IS NOT NULL THEN
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current_time := NOW();
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-- 生成最近7天的体温数据（每4小时一条）
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FOR i IN 0..41 LOOP
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-- 插入到主表
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INSERT INTO public.ss_sensor_measurements (
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id, device_id, user_id, measurement_type, measured_at, unit, raw_data
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) VALUES (
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uuid_generate_v4(),
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demo_device_id,
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demo_user_id,
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'temp',
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current_time - (interval '4 hours' * i),
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'°C',
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jsonb_build_object('temperature_c', 36.0 + (random() * 1.5))
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)
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RETURNING id INTO measurement_id;
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-- 插入到专项表
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INSERT INTO public.ss_temperature (measurement_id, temperature_c)
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SELECT measurement_id, (raw_data->>'temperature_c')::FLOAT
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FROM public.ss_sensor_measurements
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WHERE id = measurement_id;
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END LOOP;
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-- 生成最近7天的心率数据（每2小时一条）
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FOR i IN 0..83 LOOP
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-- 插入到主表
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INSERT INTO public.ss_sensor_measurements (
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id, device_id, user_id, measurement_type, measured_at, unit, raw_data
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) VALUES (
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uuid_generate_v4(),
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demo_device_id,
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demo_user_id,
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'heart_rate',
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current_time - (interval '2 hours' * i),
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'bpm',
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jsonb_build_object('heart_rate_bpm', 60 + (random() * 40)::INT)
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)
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RETURNING id INTO measurement_id;
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-- 插入到专项表
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INSERT INTO public.ss_heart_rate (measurement_id, heart_rate_bpm)
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SELECT measurement_id, (raw_data->>'heart_rate_bpm')::INT
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FROM public.ss_sensor_measurements
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WHERE id = measurement_id;
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END LOOP;
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-- 生成最近7天的血氧数据（每6小时一条）
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FOR i IN 0..27 LOOP
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-- 插入到主表
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INSERT INTO public.ss_sensor_measurements (
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id, device_id, user_id, measurement_type, measured_at, unit, raw_data
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) VALUES (
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uuid_generate_v4(),
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demo_device_id,
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demo_user_id,
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'spo2',
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current_time - (interval '6 hours' * i),
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'%',
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jsonb_build_object('spo2_percent', 95 + (random() * 5)::INT)
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)
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RETURNING id INTO measurement_id;
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-- 插入到专项表
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INSERT INTO public.ss_spo2 (measurement_id, spo2_percent)
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SELECT measurement_id, (raw_data->>'spo2_percent')::INT
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FROM public.ss_sensor_measurements
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WHERE id = measurement_id;
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END LOOP;
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-- 生成最近7天的步数数据（每天一条）
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FOR i IN 0..6 LOOP
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-- 插入到主表
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INSERT INTO public.ss_sensor_measurements (
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id, device_id, user_id, measurement_type, measured_at, unit, raw_data
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) VALUES (
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uuid_generate_v4(),
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demo_device_id,
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demo_user_id,
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'steps',
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current_time - (interval '1 day' * i),
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'count',
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jsonb_build_object('step_count', 5000 + (random() * 10000)::BIGINT)
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)
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RETURNING id INTO measurement_id;
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-- 插入到专项表
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INSERT INTO public.ss_steps (measurement_id, step_count)
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SELECT measurement_id, (raw_data->>'step_count')::BIGINT
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FROM public.ss_sensor_measurements
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WHERE id = measurement_id;
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END LOOP;
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RAISE NOTICE '成功为用户 % 生成传感器数据', demo_user_id;
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RAISE NOTICE '使用设备ID: %', demo_device_id;
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RAISE NOTICE '生成数据: 体温42条, 心率84条, 血氧28条, 步数7条';
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ELSE
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RAISE NOTICE '未找到学生用户或设备，跳过示例数据生成';
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RAISE NOTICE '学生用户ID: %, 设备ID: %', demo_user_id, demo_device_id;
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END IF;
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END $$;
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-- 创建一个用于获取最新传感器数据的视图
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CREATE OR REPLACE VIEW public.v_latest_student_health AS
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WITH latest_temp AS (
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SELECT DISTINCT ON (sm.user_id)
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sm.user_id,
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st.temperature_c,
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sm.measured_at as temp_time
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FROM public.ss_sensor_measurements sm
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JOIN public.ss_temperature st ON st.measurement_id = sm.id
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WHERE sm.measurement_type = 'temp'
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ORDER BY sm.user_id, sm.measured_at DESC
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),
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latest_heart AS (
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SELECT DISTINCT ON (sm.user_id)
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sm.user_id,
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sh.heart_rate_bpm,
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sm.measured_at as heart_time
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FROM public.ss_sensor_measurements sm
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JOIN public.ss_heart_rate sh ON sh.measurement_id = sm.id
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WHERE sm.measurement_type = 'heart_rate'
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ORDER BY sm.user_id, sm.measured_at DESC
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),
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latest_spo2 AS (
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SELECT DISTINCT ON (sm.user_id)
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sm.user_id,
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ss.spo2_percent,
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sm.measured_at as spo2_time
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FROM public.ss_sensor_measurements sm
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JOIN public.ss_spo2 ss ON ss.measurement_id = sm.id
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WHERE sm.measurement_type = 'spo2'
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ORDER BY sm.user_id, sm.measured_at DESC
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),
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latest_steps AS (
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SELECT DISTINCT ON (sm.user_id)
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sm.user_id,
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sst.step_count,
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sm.measured_at as steps_time
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FROM public.ss_sensor_measurements sm
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JOIN public.ss_steps sst ON sst.measurement_id = sm.id
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WHERE sm.measurement_type = 'steps'
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ORDER BY sm.user_id, sm.measured_at DESC
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)
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SELECT
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u.id as user_id,
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u.name,
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u.student_id,
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u.avatar,
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lt.temperature_c,
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lt.temp_time,
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lh.heart_rate_bpm,
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lh.heart_time,
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ls.spo2_percent,
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ls.spo2_time,
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lst.step_count,
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lst.steps_time
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FROM public.ak_users u
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LEFT JOIN latest_temp lt ON lt.user_id = u.id
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LEFT JOIN latest_heart lh ON lh.user_id = u.id
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LEFT JOIN latest_spo2 ls ON ls.user_id = u.id
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LEFT JOIN latest_steps lst ON lst.user_id = u.id
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WHERE u.role = 'student';
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-- 授予权限
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GRANT SELECT ON public.v_latest_student_health TO authenticated;
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COMMENT ON VIEW public.v_latest_student_health IS '获取所有学生的最新健康数据，包括体温、心率、血氧、步数';
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-- 显示统计信息
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SELECT
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measurement_type,
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COUNT(*) as record_count,
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MIN(measured_at) as earliest_record,
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MAX(measured_at) as latest_record
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FROM public.ss_sensor_measurements
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GROUP BY measurement_type
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ORDER BY measurement_type;
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