ConcatOver function in Quicksight

Does someone have any news about the Quicksight ConcatOver function which was supposed to be released soon ? It would be very helpful.
To be clear when I am talking about ConcatOver, I am talking about this :

A | ‘foo’
A | ‘bar’
B | ‘fuu’
B | ‘bir’

becoming this :

A | ‘foobar’
B | ‘fuubir’

Nevertheless, any solution to concat strings over rows would be very helpful,

Thank you

Hi @Paul1 ,

Currently you would still need to push it to the backend database as QuickSight does not support concatenating rows to columns.

An example below using Amazon Athena