Representation of a column within a schema. Columns could be
nested inside other columns.
Attributes
Name
Description
column
str
Required. Name of the column.
type
str
Required. Type of the column.
description
str
Optional. Description of the column. Default
value is an empty string.
mode
str
Optional. A column's mode indicates whether the values in
this column are required, nullable, etc. Only ``NULLABLE``,
``REQUIRED`` and ``REPEATED`` are supported. Default mode is
``NULLABLE``.
subcolumns
Sequence[`.schema.ColumnSchema`]
Optional. Schema of sub-columns. A column can
have zero or more sub-columns.
