presto-hive/src/main/java/io/prestosql/plugin/hive/metastore/file/TableMetadata.java/TableMetadata/getColumn
class TableMetadata:    public Optional<Column> getColumn(String name)
    {
        for (Column partitionColumn : partitionColumns) {
            if (partitionColumn.getName().equals(name)) {
                return Optional.of(partitionColumn);
            }
        }
        for (Column dataColumn : dataColumns) {
            if (dataColumn.getName().equals(name)) {
                return Optional.of(dataColumn);
            }
        }
        return Optional.empty();
    }