Concat array of strings into one string

Given ARRAY of strings concat into single string with separator

CONCAT_XXXX (["abcd", "pqr","xyz"], "-");
"abcd-pqr-xyz"

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

https://forums.couchbase.com/t/array-concatenate-in-n1ql/18874