Array concatenate in n1ql

SQL++
,
2

There is no easy way to do that ( MB-31737). But you like you can follow one described here

SELECT REPLACE(TRIM(ENCODE_JSON(names), "[]\""), "\",\"", ",")
LET  names = ( SELECT RAW comunidad.nombre
               FROM PPS AS cam
               UNNEST cam.zona AS zona
               INNER JOIN PPS AS comunidad ON comunidad.id = zona
               WHERE cam.id="da435348-d467-498b-aec2-e9782b11bca3" AND comunidad.type="Comunidad");

SELECT REPLACE(TRIM(ENCODE_JSON(["abc","def","xyz"]), "[]\""), "\",\"", ",");