How to use PIVOT in mysql

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Hi,
I am trying to use Pivot in mysql.But failed to achieve, can anyone help me out. Below is my table structure.

ID	QID	Value
1	10	abc@abc.com
1	11	1234567890
2	10	abc@abc.com
2	11	1234567890
3	10	abc@abc.com
3	11	1234567890
4	10	abc@abc.com
4	11	1234567890
6	10	abc@abc.com
6	11	1234567890
7	10	abc@abc.com
7	11	1234567890
8	10	abc@abc.com
8	11	1234567890
9	10	abc@abc.com
9	11	1234567890
11	10	abc@abc.com
11	11	1234567890

I tried to achieve this by using following line of code, but this is not giving me actual output which is expected.

SQL

Select FEEDBACKID,
max(case when QuestionId=10 then Option_Value  when QuestionId=11 then Option_Value end ) AS Email,
max(case when QuestionId=10 then Option_Value  when QuestionId=11 then Option_Value end ) AS Contact
FROM
PivotTable p

GROUP BY
FEEDBACKID ;

What I have tried:

Hi ,

I have tried many ways to achieve this but failed to achieve the output.
So please help me out .

Thanks in advance.

Posted 23-Dec-18 18:47pm

Sachin11089

Updated 23-Dec-18 21:18pm

Maciej Los

v2

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Maciej Los 24-Dec-18 3:14am

What kind of output do you want to achieve?

1 solution

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Maciej Los · Answer 1 · 2018-12-23T21:19:00

Solution 1

I'd strongly recommend to read this: MySQL - Pivot table basics: rows to columns[^]

Try this:

SQL

SELECT 
  FEEDBACKID, 
  GROUP_CONCAT(if(QuestionId= 10, Option_Value, NULL)) AS 'Email',
  GROUP_CONCAT(if(QuestionId = 11, Option_Value, NULL)) AS 'Contact'
FROM tbl
GROUP BY FEEDBACKID;

Posted 23-Dec-18 21:19pm

Maciej Los