Convert columns in rows in SQL server

Question

1.00/5 (1 vote)

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This is my current result set of my query:

Question   Sol25A   Sol25B   Sol25C   Sol40A   Sol40B
======================================================
A           1        4          2       6         0
B           2        3          2       1         9
C           6        7          1       0         8
======================================================
Total =    9         14         5       7         17
======================================================

And I want the result in this form:

Product   Total
===============
Sol25A      9
Sol25B      14
Sol25C      5
Sol40A      7
Sol40B      17

Can you please guide me that how I should do the query for this.

What I have tried:

I have tried the Poivot process

Posted 17-May-21 23:36pm

Sanjay7287

Updated 18-May-21 10:10am

Maciej Los

v2

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OriginalGriff · Answer 1 · 2021-05-17T23:42:00

Solution 1

PIVOT is what you need: Understanding PIVOT, UNPIVOT, and Reverse PIVOT Statements[^]

Posted 17-May-21 23:42pm

OriginalGriff

Maciej Los · Answer 2 · 2021-05-18T10:10:00

Well, you need to 1) unpivot data then to 2) sum them.

See:

SQL

CREATE TABLE Questions
(
  Question varchar(30),
  Sol25A int,
  Sol25B int,
  Sol25C int,
  Sol40A int,
  Sol40B int
);

INSERT INTO Questions (Question, Sol25A, Sol25B, Sol25C, Sol40A, Sol40B)
VALUES('A', 1, 4, 2, 6, 0),
('B', 2, 3, 2, 1, 9),
('C', 6, 7, 1, 0, 8);

SELECT Solution, SUM(Points) Total
FROM   
  (
    SELECT Question, Sol25A, Sol25B, Sol25C, Sol40A, Sol40B  
    FROM Questions
    ) pvt  
UNPIVOT (Points FOR Solution IN (Sol25A, Sol25B, Sol25C, Sol40A, Sol40B)  
)
AS unpvt
GROUP BY Solution;

Result:

Solution 	Total
Sol25A 	9
Sol25B 	14
Sol25C 	5
Sol40A 	7
Sol40B 	17

Link to fiddle: SQL Server 2019 | db<>fiddle[^]