Initial commit of akmon project

simple_student_query.sql

@@ -0,0 +1,91 @@
+-- 简化版学生数据查询脚本
+-- 当健康数据视图不存在时的备用方案
+
+-- 1. 创建一个简单的学生信息视图（不包含健康数据）
+CREATE OR REPLACE VIEW public.v_student_basic_info AS
+SELECT 
+    u.id as user_id,
+    u.username as name,
+    COALESCE(u.email, u.username) as student_id,  -- 使用email或username作为学号
+    u.avatar_url as avatar,
+    u.class_id,
+    c.name as class_name,
+    g.name as grade_name,
+    s.name as school_name,
+    -- 默认健康数据字段（为了兼容前端）
+    NULL::numeric as temperature_c,
+    NULL::timestamp as temp_time,
+    NULL::numeric as heart_rate_bpm,
+    NULL::timestamp as heart_time,
+    NULL::numeric as spo2_percent,
+    NULL::timestamp as spo2_time,
+    NULL::numeric as step_count,
+    NULL::timestamp as steps_time
+FROM public.ak_users u
+LEFT JOIN public.ak_classes c ON u.class_id = c.id
+LEFT JOIN public.ak_grades g ON c.grade_id = g.id
+LEFT JOIN public.ak_schools s ON g.school_id = s.id
+WHERE u.role = 'student';
+
+-- 2. 检查系统中存在的表
+SELECT 
+    table_schema,
+    table_name,
+    table_type
+FROM information_schema.tables 
+WHERE table_schema = 'public' 
+    AND (
+        table_name LIKE '%student%' OR 
+        table_name LIKE '%health%' OR 
+        table_name LIKE '%sensor%' OR 
+        table_name LIKE '%ss_%' OR
+        table_name = 'ak_users'
+    )
+ORDER BY table_name;
+
+-- 3. 查看ak_users表的结构
+SELECT 
+    column_name,
+    data_type,
+    is_nullable,
+    column_default
+FROM information_schema.columns 
+WHERE table_schema = 'public' 
+    AND table_name = 'ak_users'
+ORDER BY ordinal_position;
+
+-- 4. 测试基础查询：获取某个班级的学生
+-- 这是前端当前使用的查询逻辑
+SELECT 
+    id,
+    username as name,
+    email as student_id,
+    avatar_url as avatar,
+    class_id,
+    school_id,
+    grade_id,
+    role
+FROM public.ak_users 
+WHERE role = 'student' 
+    AND class_id IS NOT NULL
+ORDER BY username
+LIMIT 10;
+
+-- 5. 模拟前端查询：假设当前用户属于某个班级
+WITH current_user_class AS (
+    -- 模拟当前用户的class_id
+    SELECT class_id 
+    FROM public.ak_users 
+    WHERE class_id IS NOT NULL 
+    LIMIT 1
+)
+SELECT 
+    u.id,
+    u.username as name,
+    u.email as student_id,
+    u.avatar_url as avatar,
+    u.class_id
+FROM public.ak_users u
+JOIN current_user_class cuc ON u.class_id = cuc.class_id
+WHERE u.role = 'student'
+ORDER BY u.username;