Getting similar output to STRING_AGG function in query editor?

Hello,
In the Query editor, is there a way to replicate the results I would get by typing:

 STRING_AGG(DISTINCT j.simulation_category, ', ') AS "column name",

Adding custom expression in the summarize block.

No, Metabase does not currently (as of 57) have a custom aggregate expression for string concatenation.

Ok, I see. Thanks for the info.