-- 检查流水号（display_order）是否按“科室+医生+当天”正确递增
-- 
-- 说明：
-- 1. display_order 存的是纯数字（1, 2, 3...），不带时间戳前缀
-- 2. 时间戳前缀（如 20260109）是在前端显示时加上的
-- 3. 后端用 Redis key "ORG-{科室ID}-DOC-{医生ID}" 按天自增
-- 
-- 如何判断逻辑是否正确：
--   同一科室、同一医生、同一天的记录，display_order 应该递增（1, 2, 3...）
--   不同科室、不同医生、不同天的记录，可能都是 1（这是正常的）

-- ========================================
-- 查询1：按“科室+医生+日期”分组，看每组内的 display_order 是否递增
-- ========================================
SELECT 
    DATE(start_time) AS 日期,
    organization_id AS 科室ID,
    registrar_id AS 医生ID,
    COUNT(*) AS 该组记录数,
    MIN(display_order) AS 最小序号,
    MAX(display_order) AS 最大序号,
    STRING_AGG(display_order::text, ', ' ORDER BY start_time) AS 序号列表,
    STRING_AGG(id::text, ', ' ORDER BY start_time) AS 记录ID列表
FROM adm_encounter
WHERE delete_flag = '0'
  AND start_time >= CURRENT_DATE - INTERVAL '7 days'  -- 只看最近7天
  AND display_order IS NOT NULL
GROUP BY DATE(start_time), organization_id, registrar_id
ORDER BY 日期 DESC, 科室ID, 医生ID;

-- ========================================
-- 查询2：详细查看每条记录，看同组内的序号是否连续
-- ========================================
SELECT 
    id AS 记录ID,
    DATE(start_time) AS 日期,
    organization_id AS 科室ID,
    registrar_id AS 医生ID,
    start_time AS 挂号时间,
    display_order AS 流水号,
    -- 计算：同组内的序号应该是 1, 2, 3...，看是否有重复或跳号
    ROW_NUMBER() OVER (
        PARTITION BY DATE(start_time), organization_id, registrar_id 
        ORDER BY start_time
    ) AS 应该是第几个,
    CASE 
        WHEN display_order = ROW_NUMBER() OVER (
            PARTITION BY DATE(start_time), organization_id, registrar_id 
            ORDER BY start_time
        ) THEN '✓ 正常'
        ELSE '✗ 异常'
    END AS 是否正常
FROM adm_encounter
WHERE delete_flag = '0'
  AND start_time >= CURRENT_DATE - INTERVAL '7 days'
  AND display_order IS NOT NULL
ORDER BY DATE(start_time) DESC, organization_id, registrar_id, start_time;

-- ========================================
-- 查询3：只看今天的数据（最直观）
-- ========================================
SELECT 
    id AS 记录ID,
    organization_id AS 科室ID,
    registrar_id AS 医生ID,
    start_time AS 挂号时间,
    display_order AS 流水号
FROM adm_encounter
WHERE delete_flag = '0'
  AND DATE(start_time) = CURRENT_DATE
  AND display_order IS NOT NULL
ORDER BY organization_id, registrar_id, start_time;

-- ========================================
-- 查询4：发现问题 - 找出同组内 display_order 重复的记录
-- ========================================
WITH ranked AS (
    SELECT 
        id,
        DATE(start_time) AS reg_date,
        organization_id,
        registrar_id,
        start_time,
        display_order,
        ROW_NUMBER() OVER (
            PARTITION BY DATE(start_time), organization_id, registrar_id 
            ORDER BY start_time
        ) AS should_be_order
    FROM adm_encounter
    WHERE delete_flag = '0'
      AND start_time >= CURRENT_DATE - INTERVAL '7 days'
      AND display_order IS NOT NULL
)
SELECT 
    reg_date AS 日期,
    organization_id AS 科室ID,
    registrar_id AS 医生ID,
    COUNT(*) AS 重复数量,
    STRING_AGG(id::text || '->' || display_order::text, ', ') AS 问题记录
FROM ranked
WHERE display_order != should_be_order
GROUP BY reg_date, organization_id, registrar_id
ORDER BY reg_date DESC;