Column values in table equal column names in other table (unpivot? cross apply?)

Question

2 tables:
CREATE TABLE Requirement
 reqID int IDENTITY(1,1) PRIMARY KEY,
 req_result_id numeric(10,0) NOT NULL,
 description varchar(200),
 heading varchar(100),
 GO
INSERT INTO Requirement VALUES (5296,'Cold pack','HH19_5');
INSERT INTO Requirement VALUES (5296,'Band-Aids','HH19_6');
INSERT INTO Requirement VALUES (5296,'First aid cream','HH19_7');
INSERT INTO Requirement VALUES (5296,'Tape','HH19_8');
INSERT INTO Requirement VALUES (5296,'Gloves','HH19_9);
INSERT INTO Requirement VALUES (5296,'Bandages','HH19_10');
INSERT INTO Requirement VALUES (5296,'Hand sanitizer','HH19_11');
INSERT INTO Requirement VALUES (5296,'Scissors','HH19_12');
INSERT INTO Requirement VALUES (5296,'Poison control information','HH19_13');
INSERT INTO Requirement VALUES (5296,'Name','HH02');
GO
CREATE TABLE Response
 respID int IDENTITY(1,1) PRIMARY KEY,
req_result_id numeric(10,0) NOT NULL,
 HH02 varchar(200),
 HH19_5 varchar(20),
 HH19_6 varchar(20),
 HH19_7 varchar(20),
 HH19_8 varchar(20),
 HH19_9 varchar(20),
 HH19_10 varchar(20),
 HH19_11 varchar(20),
 HH19_12 varchar(20),
 HH19_13 varchar(20),
 GO
INSERT INTO Response VALUES (33,'Mary',7,8,9,10,11,12,13,14,15);
INSERT INTO Response VALUES (35,'Barbara',7,8,9,10,11,12,13,14,15);
INSERT INTO Response VALUES (144,'Melissa',7,8,9,10,11,12,13,14,15);
INSERT INTO Response VALUES (146,'Missy',7,8,9,10,11,12,13,14,15);
INSERT INTO Response VALUES (5296,'Pamela',7,8,9,10,11,12,13,14,15);
GO
Result:
description
heading
response
Name
HH02
Pamela
Bandages
HH19_10
12
Hand sanitizer
HH19_11
13
Scissors
HH19_12
14
Poison control information
HH19_13
15
Cold pack
HH19_5
7
Band-Aids
HH19_6
8
First aid cream
HH19_7
9
Tape
HH19_8
10
Gloves
HH19_9
11
For now, I'm using where req_result_id = 5296. Only one row from the Response table is selected.
I'm playing with unpivot and cross apply. I might use two CTE's but am not yet sure how to join them. I would just like to see what others here suggest.
I only need help with T-SQL - not table design.
Let me know if you need more info or if I need to reformat the expected output to make it legible.
Thanks for any suggestions.

Answer 1

CREATE TABLE Requirement
reqID int IDENTITY(1,1) PRIMARY KEY,
req_result_id numeric(10,0) NOT NULL,
description varchar(200),
heading varchar(100),
GO
INSERT INTO Requirement VALUES (5296,'Cold pack','HH19_5');
INSERT INTO Requirement VALUES (5296,'Band-Aids','HH19_6');
INSERT INTO Requirement VALUES (5296,'First aid cream','HH19_7');
INSERT INTO Requirement VALUES (5296,'Tape','HH19_8');
INSERT INTO Requirement VALUES (5296,'Gloves','HH19_9');
INSERT INTO Requirement VALUES (5296,'Bandages','HH19_10');
INSERT INTO Requirement VALUES (5296,'Hand sanitizer','HH19_11');
INSERT INTO Requirement VALUES (5296,'Scissors','HH19_12');
INSERT INTO Requirement VALUES (5296,'Poison control information','HH19_13');
INSERT INTO Requirement VALUES (5296,'Name','HH02');
GO
CREATE TABLE Response
respID int IDENTITY(1,1) PRIMARY KEY,
req_result_id numeric(10,0) NOT NULL,
HH02 varchar(200),
HH19_5 varchar(20),
HH19_6 varchar(20),
HH19_7 varchar(20),
HH19_8 varchar(20),
HH19_9 varchar(20),
HH19_10 varchar(20),
HH19_11 varchar(20),
HH19_12 varchar(20),
HH19_13 varchar(20),
GO
INSERT INTO Response VALUES (33,'Mary',7,8,9,10,11,12,13,14,15);
INSERT INTO Response VALUES (35,'Barbara',7,8,9,10,11,12,13,14,15);
INSERT INTO Response VALUES (144,'Melissa',7,8,9,10,11,12,13,14,15);
INSERT INTO Response VALUES (146,'Missy',7,8,9,10,11,12,13,14,15);
INSERT INTO Response VALUES (5296,'Pamela',7,8,9,10,11,12,13,14,15);
GO
;with mycte as (
select respID,req_result_id,response,heading from Response
cross apply (values
([HH19_5],'HH19_5')
,([HH19_6],'HH19_6')
,([HH19_7],'HH19_7')
,([HH19_8],'HH19_8')
,([HH19_9],'HH19_9')
,([HH19_10],'HH19_10')
,([HH19_11],'HH19_11')
,([HH19_12],'HH19_12')
,([HH19_13],'HH19_13')
,([HH02],'HH02') ) d(response,heading)
WHERE req_result_id=5296 )
select description,r.heading,response from Requirement r
inner join mycte m on r.req_result_id=m.req_result_id and r.heading=m.heading
Order by Case When len(r.heading)=4 then 1 Else 2 END, Len(Replace(r.heading,'HH19_','')) desc
drop table Requirement,Response