Class Table

Table(table_ref, schema=None)

Tables represent a set of rows whose values correspond to a schema.

See https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#resource-table

Parameters

Name	Description
table_ref	`Union[google.cloud.bigquery.table.TableReference, str]` A pointer to a table. If `table_ref` is a string, it must included a project ID, dataset ID, and table ID, each separated by `.`.
schema	`Optional[Sequence[Union[ SchemaField, Mapping[str, Any] ]]]` The table's schema. If any item is a mapping, its content must be compatible with from_api_repr.

Inheritance

builtins.object > google.cloud.bigquery.table._TableBase > Table

Properties

clustering_fields

Union[List[str], None]: Fields defining clustering for the table

(Defaults to :data:None).

Clustering fields are immutable after table creation.

.. note::

BigQuery supports clustering for both partitioned and non-partitioned tables.

created

Union[datetime.datetime, None]: Datetime at which the table was created (:data:None until set from the server).

dataset_id

ID of dataset containing the table.

description

Union[str, None]: Description of the table (defaults to :data:None).

Exceptions

Type	Description
ValueError	For invalid value types.

encryption_configuration

google.cloud.bigquery.encryption_configuration.EncryptionConfiguration: Custom encryption configuration for the table.

Custom encryption configuration (e.g., Cloud KMS keys) or :data:None if using default encryption.

See protecting data with Cloud KMS keys <https://cloud.google.com/bigquery/docs/customer-managed-encryption>;_ in the BigQuery documentation.

etag

Union[str, None]: ETag for the table resource (:data:None until set from the server).

expires

Union[datetime.datetime, None]: Datetime at which the table will be deleted.

Exceptions

Type	Description
ValueError	For invalid value types.

external_data_configuration

Union[google.cloud.bigquery.ExternalConfig, None]: Configuration for an external data source (defaults to :data:None).

Exceptions

Type	Description
ValueError	For invalid value types.

friendly_name

Union[str, None]: Title of the table (defaults to :data:None).

Exceptions

Type	Description
ValueError	For invalid value types.

full_table_id

Union[str, None]: ID for the table (:data:None until set from the server).

In the format project-id:dataset_id.table_id.

labels

Dict[str, str]: Labels for the table.

This method always returns a dict. To change a table's labels, modify the dict, then call Client.update_table. To delete a label, set its value to :data:None before updating.

Exceptions

Type	Description
ValueError	If ``value`` type is invalid.

location

Union[str, None]: Location in which the table is hosted

Defaults to :data:None.

modified

Union[datetime.datetime, None]: Datetime at which the table was last modified (:data:None until set from the server).

mview_enable_refresh

Optional[bool]: Enable automatic refresh of the materialized view when the base table is updated. The default value is :data:True.

mview_last_refresh_time

Optional[datetime.datetime]: Datetime at which the materialized view was last refreshed (:data:None until set from the server).

mview_query

Optional[str]: SQL query defining the table as a materialized view (defaults to :data:None).

mview_refresh_interval

Optional[datetime.timedelta]: The maximum frequency at which this materialized view will be refreshed. The default value is 1800000 milliseconds (30 minutes).

num_bytes

Union[int, None]: The size of the table in bytes (:data:None until set from the server).

num_rows

Union[int, None]: The number of rows in the table (:data:None until set from the server).

partition_expiration

Union[int, None]: Expiration time in milliseconds for a partition.

If partition_expiration is set and type_ is not set, type_ will default to DAY.

partitioning_type

Union[str, None]: Time partitioning of the table if it is partitioned (Defaults to :data:None).

path

URL path for the table's APIs.

project

Project bound to the table.

range_partitioning

Optional[google.cloud.bigquery.table.RangePartitioning]: Configures range-based partitioning for a table.

.. note:: Beta. The integer range partitioning feature is in a pre-release state and might change or have limited support.

Only specify at most one of xref_time_partitioning or xref_range_partitioning.

Exceptions

Type	Description
ValueError	If the value is not RangePartitioning or :data:`None`.

reference

A xref_TableReference pointing to this table.

Returns

Type	Description
google.cloud.bigquery.table.TableReference	pointer to this table.

require_partition_filter

bool: If set to true, queries over the partitioned table require a partition filter that can be used for partition elimination to be specified.

schema

Sequence[Union[ xref_SchemaField, Mapping[str, Any] ]]: Table's schema.

Exceptions

Type	Description
Exception	If ``schema`` is not a sequence, or if any item in the sequence is not a SchemaField instance or a compatible mapping representation of the field.

self_link

Union[str, None]: URL for the table resource (:data:None until set from the server).

snapshot_definition

Information about the snapshot. This value is set via snapshot creation.

See: https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#Table.FIELDS.snapshot_definition

streaming_buffer

google.cloud.bigquery.StreamingBuffer: Information about a table's streaming buffer.

table_id

The table ID.

table_type

Union[str, None]: The type of the table (:data:None until set from the server).

Possible values are 'TABLE', 'VIEW', 'MATERIALIZED_VIEW' or 'EXTERNAL'.

time_partitioning

Optional[google.cloud.bigquery.table.TimePartitioning]: Configures time-based partitioning for a table.

Only specify at most one of xref_time_partitioning or xref_range_partitioning.

Exceptions

Type	Description
ValueError	If the value is not TimePartitioning or :data:`None`.

view_query

Union[str, None]: SQL query defining the table as a view (defaults to :data:None).

By default, the query is treated as Standard SQL. To use Legacy SQL, set view_use_legacy_sql to :data:True.

Exceptions

Type	Description
ValueError	For invalid value types.

view_use_legacy_sql

bool: Specifies whether to execute the view with Legacy or Standard SQL.

This boolean specifies whether to execute the view with Legacy SQL (:data:True) or Standard SQL (:data:False). The client side default is :data:False. The server-side default is :data:True. If this table is not a view, :data:None is returned.

Exceptions

Type	Description
ValueError	For invalid value types.

Methods

from_api_repr

from_api_repr(resource: dict)

Factory: construct a table given its API representation

Parameter

Name	Description
resource	`Dict[str, object]` Table resource representation from the API

Exceptions

Type	Description
KeyError	If the ``resource`` lacks the key ``'tableReference'``, or if the ``dict`` stored within the key ``'tableReference'`` lacks the keys ``'tableId'``, ``'projectId'``, or ``'datasetId'``.

Returns

Type	Description
google.cloud.bigquery.table.Table	Table parsed from ``resource``.

from_string

from_string(full_table_id: str)

Construct a table from fully-qualified table ID.

Parameter

Name	Description
full_table_id	`str` A fully-qualified table ID in standard SQL format. Must included a project ID, dataset ID, and table ID, each separated by `.`.

Exceptions

Type	Description
ValueError	If ``full_table_id`` is not a fully-qualified table ID in standard SQL format.

Returns

Type	Description
Table .. rubric:: Examples >>> Table.from_string('my-project.mydataset.mytable') Table(TableRef...(D...('my-project', 'mydataset'), 'mytable'))	Table parsed from ``full_table_id``.

to_api_repr

to_api_repr()

Constructs the API resource of this table

Returns

Type	Description
Dict[str, object]	Table represented as an API resource

to_bqstorage

to_bqstorage()

Construct a BigQuery Storage API representation of this table.

Returns

Type	Description
str	A reference to this table in the BigQuery Storage API.

init

__init__(table_ref, schema=None)

Initialize self. See help(type(self)) for accurate signature.

Table

Table(table_ref, schema=None)

Tables represent a set of rows whose values correspond to a schema.

See https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#resource-table

Parameters

Name	Description
table_ref	`Union[google.cloud.bigquery.table.TableReference, str]` A pointer to a table. If `table_ref` is a string, it must included a project ID, dataset ID, and table ID, each separated by `.`.
schema	`Optional[Sequence[Union[ SchemaField, Mapping[str, Any] ]]]` The table's schema. If any item is a mapping, its content must be compatible with from_api_repr.