static String buildSelectSql(String table, String[] fields) {

        // TODO:

        StringJoiner s = new StringJoiner(", ","SELECT "," FROM "+table);

        for(String n:fields){

            s.add(n);

}

        return s.toString();

        /* return "SELECT fields FROM table".replace("fields",String.join(", ",fields)).replace(table,table) */

    }