Class ColumnSchema (2.0.2)

Version 2.0.2

• 3.19.0 (latest)
• 3.18.3
• 3.17.2
• 3.16.0
• 3.15.1
• 3.14.0
• 3.13.1
• 3.12.0
• 3.11.1
• 3.10.0
• 3.9.3
• 3.8.1
• 3.7.1
• 3.6.2
• 3.5.0
• 3.4.3
• 3.3.2
• 3.2.1
• 3.1.1
• 3.0.0
• 2.0.2
• 1.0.2
• 0.8.2
• 0.7.0
• 0.6.0
• 0.5.0
• 0.4.0
• 0.3.0

ColumnSchema(mapping=None, *, ignore_unknown_fields=False, **kwargs)

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.