SQL选择多列中存在的多个值

Question

I have two tables DiagnosisCodes and DiagnosisConditions as shown below. I need to find the members(IDs) who have a combination of Hypertension and Diabetes. The problem here is the DiagnosisCodes are spread across 10 columns. How do I check if the member qualifies for both conditions

DiagnosisCodes

+----+-------+-------+-------+-----+--------+
| ID | Diag1 | Diag2 | Diag3 | ... | Diag10 |
+----+-------+-------+-------+-----+--------+
| A  |  2502 |  2593 | NULL  | ... | NULL   |
| B  |  2F93 |  2509 | 2593  | ... | NULL   |
| C  |  C257 |  2509 | C6375 | ... | NULL   |
+----+-------+-------+-------+-----+--------+

DiagnosisConditions

+------+--------------+
| Code |  Condition   |
+------+--------------+
| 2502 | Hypertension |
| 2593 | Diabetes     |
| 2509 | Diabetes     |
| 2F93 | Hypertension |
| 2673 | HeartFailure |
+------+--------------+

Expected Result

+---------+
| Members |
+---------+
| A       |
| B       |
+---------+

How do I query to check Mulitple values which are present in Multiple columns. Do you suggest to use EXISTS ?

SELECT DISTINCT id 
FROM   diagnosiscodes 
WHERE  ( diag1, diag2...diag10 ) IN (SELECT code 
                                     FROM   diagnosiscondition 
                                     WHERE  condition IN ( 'Hypertension','Diabetes' ) 
                                     ) 

Answer 1

I would do this using group by and having :

select dc.id
from diagnosiscodes dc join
     diagnosiscondistions dcon
     on dcon.code in (dc.diag1, dc.diag2, . . . )
group by id
having sum(case when dcon.condition = 'diabetes' then 1 else 0 end) > 0 and
       sum(case when dcon.condition = 'Hypertension' then 1 else 0 end) > 0;

Then, you should fix your data structure. Having separate columns with the same information distinguished by a number is usually a sign of a poor data structure. You should have a table, called somethhing like PatientDiagnoses with one row per patient and diagnosis.

Answer 2

Here is one way by unpivoting the data

SELECT DISTINCT id
FROM   yourtable
       CROSS apply (VALUES (Diag1),(Diag2),..(Diag10))tc(Diag)
WHERE  Diag IN (SELECT code
                FROM   diagnosiscondition
                WHERE  condition IN ( 'Hypertension', 'Diabetes' ) group by code having count(distinct condition)=2)