如何 return 来自子查询的多个字段

Question

我在医疗保健部门工作，我们会检查患者的保险，看看他们的保险是否仍然有效，是否有资格获得我们的服务。不幸的是，数据库不太擅长将资格与预约或未来访问相关联（我们对此无法控制）。因此，我们无法了解资格检查最终会发生什么（我们是否使用了该保险？患者是否根本没有使用保险？等等）。

我们想要做的是尝试将资格与资格检查后一天内（即同一天或前一天）的患者就诊联系起来。我想检索该访问编号和该访问的主要付款人（我想要访问编号，以便我可以验证我是否获得了正确的访问以及正确的主要付款人）。

如何在主查询的结果中获取这两条信息？备选方案：如果我只从内联子查询返回付款人姓名，我如何抽查结果以验证它是否按预期工作？

资格查询

select distinct
  elig.patient_id,
  pm.payer_name,
  elig.status,
  elig.reject_reason
from
  eligibility elig
  inner join payer_mstr pm on elig.payer_id=pm.payer_id
where
  elig.create_timestamp>='2019-01-01' and elig.create_timestamp<'2019-02-01'

相关的遭遇和付款人数据和表格

select distinct
  pe.enc_nbr,
  pm.payer_name
from
  patient_encounter pe --visit data
--encounter_payer holds payer data for a specific visit, and 1 means primary payer
  left join encounter_payer epay on pe.enc_id=epay.enc_id and cob=1 
  left join payer_mstr pm on epay.payer_id=pm.payer_id

我在 Microsoft SQL Server 2008 R2

Answer 1

很难测试您非常具体的问题，但试试这个：

SELECT DISTINCT
    elig.patient_id,
    pm.payer_name,
    elig.status,
    elig.reject_reason
    pe.enc_nbr
FROM
    patient_encounter pe
    LEFT JOIN encounter_payer epay on pe.enc_id=epay.enc_id and cob=1 
    LEFT JOIN payer_mstr pm on epay.payer_id=pm.payer_id
    LEFT JOIN eligibility elig on elig.payer_id=pm.payer_id
WHERE
    elig.create_timestamp>='2019-01-01' and elig.create_timestamp<'2019-02-01'

Answer 2

您可以尝试使用常见的 table 表达式。像子查询一样工作，您可以添加您想要的所有字段。

Common Table Expressions

WITH cte AS (
 select 
   pe.enc_nbr,
   pm.payer_name,
   pm.payer_id,
   ROW_NUMBER() OVER(PARTITION BY pm.payer_id ORDER BY pm.payer_id ASC) AS row_num --If you have a date created on each row I would change the pm.payer_id field that and change it to ORDER BY <field> DESC
 from
   patient_encounter pe --visit data
 --encounter_payer holds payer data for a specific visit, and 1 means primary payer
   left join encounter_payer epay on pe.enc_id=epay.enc_id and cob=1 
   left join payer_mstr pm on epay.payer_id=pm.payer_id
 --Here you could add a WHERE clause to narrow your search date down to get previous or current date if you have a date field just use WHERE date >= DATEADD(d,-1,GETDATE())
)
select distinct
  elig.patient_id,
  pm.payer_name,
  elig.status,
  elig.reject_reason,
  cte.enc_nbr
from
  eligibility elig
  inner join payer_mstr pm on elig.payer_id=pm.payer_id
  left join cte ON cte.pm.payer_id = pm.payer_id --Now you can pull in any fields you need and can see if they have a record or do not
where
  elig.create_timestamp>='2019-01-01' and elig.create_timestamp<'2019-02-01'

如何 return 来自子查询的多个字段

How to return multiple fields from subquery

sql

sql-server-2008