STRING_AGG(expr[, delim])
STRING_AGG(expr[, delim])
Combines column values within a group into a single delimited string of those values.The default delimiter is a comma.
STRING_AGG_DISTINCT(expr[, delim])
STRING_AGG_DISTINCT(expr[, delim])
Combines column values within a group into a single delimited string of those values,
removing any duplicates.The default delimiter is a comma.