Join us at FabCon Atlanta from March 16 - 20, 2026, for the ultimate Fabric, Power BI, AI and SQL community-led event. Save $200 with code FABCOMM.
Register now!The Power BI Data Visualization World Championships is back! Get ahead of the game and start preparing now! Learn more
hey everyone,
i have a quick question , if you can help me with that,
in my power query i face one issue/or problematic
my data is in column structured (exemple below) i can unpivot the data for more flexibility and automation ,
but i'm asking myself if the fact that i get a lot of duplicate in some of culumns after unpivoting, will not affect my result when i aggregate through dax measures ???? (average - median - text analysis - stdev -..... date comparison )
for exemple i know i can't anymore count the number of rows/of responses, since i dont have ids to count the distinct one (emails are not mondatory, some felt) (i can try to divide the count of row on the number of cols i unpivot , but perhaps it not so a good idea)
data exemple, let say i have response to a survey
date - question 1 - question 2 - question 3 - question 4 - email - company - comment - language
01-01-2022 Res 1 Res 1 Res 1 Res 1 1@gm.com empty not so good en
01-01-2022 Res 2 Res 2 Res 2 Res 2 2@gm.com google good fr
01-02-2022 Res 3 Res 3 Res 3 Res 3 3@gm.com micros null de
-- afrer unpivot :
date attribute value email company comment language
01-01-2022 question 1 Res 1 1@gm.com empty not so good en
01-01-2022 question 2 Res 1 1@gm.com empty not so good en
01-01-2022 question 3 Res 1 1@gm.com empty not so good en
01-01-2022 question 4 Res 1 1@gm.com empty not so good en
01-01-2022 question1 Res 2 2@gm.com google good fr
01-01-2022 question2 Res 2 2@gm.com google good fr
01-01-2022 question 3 Res 2 2@gm.com google good fr
01-01-2022 question4 Res 2 2@gm.com google good fr
.........
then my question is, did you already face this situation , what should i take care on ?? will i have false result if i 'm not careful
i will now compare the two situation with some aggregation , but i want you confirmation too, please let me know
thank you ,
Solved! Go to Solution.
Hi @koko_pbi ,
If I understand correctly, you can add an index column as an ID column first and then unpivot.
Add an index column - Power Query | Microsoft Learn
Best Regards,
Stephen Tao
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
Hi @koko_pbi ,
If I understand correctly, you can add an index column as an ID column first and then unpivot.
Add an index column - Power Query | Microsoft Learn
Best Regards,
Stephen Tao
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
The Power BI Data Visualization World Championships is back! Get ahead of the game and start preparing now!