presto-cassandra/src/main/java/io/prestosql/plugin/cassandra/util/CassandraCqlUtils.java/CassandraCqlUtils/select
class CassandraCqlUtils:    public static Selection select(List<CassandraColumnHandle> columns)
    {
        Selection selection = QueryBuilder.select();
        for (CassandraColumnHandle column : columns) {
            selection.column(validColumnName(column.getName()));
        }
        return selection;
    }