presto-tpcds/src/main/java/io/prestosql/plugin/tpcds/TpcdsColumnHandle.java/TpcdsColumnHandle/equals
class TpcdsColumnHandle:    @Override
    public boolean equals(Object o)
    {
        if (this == o) {
            return true;
        }
        if ((o == null) || (getClass() != o.getClass())) {
            return false;
        }
        TpcdsColumnHandle other = (TpcdsColumnHandle) o;
        return Objects.equals(columnName, other.columnName);
    }