Class ColumnSchema (3.11.0)

Version 3.11.0

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

A column within a schema. Columns can be nested inside other columns.

Attributes

Name	Description
column	str Required. Name of the column. Must be a UTF-8 string without dots (.). The maximum size is 64 bytes.
type_	str Required. Type of the column. Must be a UTF-8 string with the maximum size of 128 bytes.
description	str Optional. Description of the column. Default value is an empty string. The description must be a UTF-8 string with the maximum size of 2000 bytes.
mode	str Optional. A column's mode indicates whether values in this column are required, nullable, or repeated. Only NULLABLE, REQUIRED, and REPEATED values are supported. Default mode is NULLABLE.
subcolumns	MutableSequence[google.cloud.datacatalog_v1.types.ColumnSchema] Optional. Schema of sub-columns. A column can have zero or more sub-columns.