Class SchemaField (3.1.0)
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SchemaField(name: str, field_type: str, mode: str = 'NULLABLE', description: Union[str, google.cloud.bigquery.schema._DefaultSentinel] = <_DefaultSentinel.DEFAULT_VALUE: <object object>>, fields: Iterable[google.cloud.bigquery.schema.SchemaField] = (), policy_tags: Union[google.cloud.bigquery.schema.PolicyTagList, None, google.cloud.bigquery.schema._DefaultSentinel] = <_DefaultSentinel.DEFAULT_VALUE: <object object>>, precision: Union[int, google.cloud.bigquery.schema._DefaultSentinel] = <_DefaultSentinel.DEFAULT_VALUE: <object object>>, scale: Union[int, google.cloud.bigquery.schema._DefaultSentinel] = <_DefaultSentinel.DEFAULT_VALUE: <object object>>, max_length: Union[int, google.cloud.bigquery.schema._DefaultSentinel] = <_DefaultSentinel.DEFAULT_VALUE: <object object>>)Describe a single field within a table schema.
Inheritance
builtins.object > SchemaFieldProperties
description
Optional[str]: description for the field.
field_type
str: The type of the field.
See: https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#TableFieldSchema.FIELDS.type
fields
Optional[tuple]: Subfields contained in this field.
Must be empty unset if field_type is not 'RECORD'.
is_nullable
bool: whether 'mode' is 'nullable'.
max_length
Optional[int]: Maximum length for the STRING or BYTES field.
mode
Optional[str]: The mode of the field.
See: https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#TableFieldSchema.FIELDS.mode
name
str: The name of the field.
policy_tags
Optional[google.cloud.bigquery.schema.PolicyTagList]: Policy tag list definition for this field.
precision
Optional[int]: Precision (number of digits) for the NUMERIC field.
scale
Optional[int]: Scale (digits after decimal) for the NUMERIC field.
Methods
from_api_repr
from_api_repr(api_repr: dict)Return a SchemaField object deserialized from a dictionary.
Mapping[str, str]
The serialized representation of the SchemaField, such as what is output by to_api_repr.
to_api_repr
to_api_repr()Return a dictionary representing this schema field.
to_standard_sql
to_standard_sql()Return the field as the standard SQL field representation object.
__init__
__init__(name: str, field_type: str, mode: str = 'NULLABLE', description: Union[str, google.cloud.bigquery.schema._DefaultSentinel] = <_DefaultSentinel.DEFAULT_VALUE: <object object>>, fields: Iterable[google.cloud.bigquery.schema.SchemaField] = (), policy_tags: Union[google.cloud.bigquery.schema.PolicyTagList, None, google.cloud.bigquery.schema._DefaultSentinel] = <_DefaultSentinel.DEFAULT_VALUE: <object object>>, precision: Union[int, google.cloud.bigquery.schema._DefaultSentinel] = <_DefaultSentinel.DEFAULT_VALUE: <object object>>, scale: Union[int, google.cloud.bigquery.schema._DefaultSentinel] = <_DefaultSentinel.DEFAULT_VALUE: <object object>>, max_length: Union[int, google.cloud.bigquery.schema._DefaultSentinel] = <_DefaultSentinel.DEFAULT_VALUE: <object object>>)Initialize self. See help(type(self)) for accurate signature.
SchemaField
SchemaField(name: str, field_type: str, mode: str = 'NULLABLE', description: Union[str, google.cloud.bigquery.schema._DefaultSentinel] = <_DefaultSentinel.DEFAULT_VALUE: <object object>>, fields: Iterable[google.cloud.bigquery.schema.SchemaField] = (), policy_tags: Union[google.cloud.bigquery.schema.PolicyTagList, None, google.cloud.bigquery.schema._DefaultSentinel] = <_DefaultSentinel.DEFAULT_VALUE: <object object>>, precision: Union[int, google.cloud.bigquery.schema._DefaultSentinel] = <_DefaultSentinel.DEFAULT_VALUE: <object object>>, scale: Union[int, google.cloud.bigquery.schema._DefaultSentinel] = <_DefaultSentinel.DEFAULT_VALUE: <object object>>, max_length: Union[int, google.cloud.bigquery.schema._DefaultSentinel] = <_DefaultSentinel.DEFAULT_VALUE: <object object>>)Describe a single field within a table schema.