Objective is to make table unique at ID using group by , concat_ws and collect_list ,combining distinct values in one row.

[Anonymous]

Objective is to make table unique at ID. Table structure is as in attached image.

Query used is : 

select

ID,

concat_ws(' & ' , collect_list(Distinct Gender)) as Gender

from table

group by ID

It can be possible if we can order values within collect_list and then concat but I can't figure out how to do that.

@Hubert Dudek​ @Werner Stinckens​ @Aviral Bhardwaj​ @Hemanth A​ @Omkar G​ @Yogita Chavan​ @Gam Nguyen​ @Aman Sehgal​ @Ajay Pandey​ @pat​ @Hau Nguyen​ 

[Aviral-Bhardwaj]

use split or Explode here ,it will work

[Anonymous]

here I have to join multiple values in one row. Split and explode will be used when we have to convert list/array into different rows

[-werners-]

Does this help?

https://stackoverflow.com/questions/46580253/collect-list-by-preserving-order-based-on-another-varia...

https://stackoverflow.com/questions/59782602/groupby-and-collect-list-maintaining-order-based-on-ano...

[Anonymous]

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