Class CopyJob (2.29.0) 

CopyJob(job_id, sources, destination, client, job_config=None)

Asynchronous job: copy data into a table from other tables.

Parameters

Name Description
job_id str

the job's ID, within the project belonging to client.

sources List[google.cloud.bigquery.table.TableReference]

Table from which data is to be loaded.

destination google.cloud.bigquery.table.TableReference

Table into which data is to be loaded.

client google.cloud.bigquery.client.Client

A client which holds credentials and project configuration for the dataset (which requires a project).

job_config Optional[google.cloud.bigquery.job.CopyJobConfig]

Extra configuration options for the copy job.

Inheritance

builtins.object > google.api_core.future.base.Future > google.api_core.future.polling.PollingFuture > google.cloud.bigquery.job.base._AsyncJob > CopyJob

Properties

create_disposition

created

Datetime at which the job was created.

Returns
Type Description
Optional[datetime.datetime] the creation time (None until set from the server).

destination

google.cloud.bigquery.table.TableReference: Table into which data is to be loaded.

destination_encryption_configuration

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

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

See destination_encryption_configuration.

ended

Datetime at which the job finished.

Returns
Type Description
Optional[datetime.datetime] the end time (None until set from the server).

error_result

Error information about the job as a whole.

Returns
Type Description
Optional[Mapping] the error information (None until set from the server).

errors

Information about individual errors generated by the job.

Returns
Type Description
Optional[List[Mapping]] the error information (None until set from the server).

etag

ETag for the job resource.

Returns
Type Description
Optional[str] the ETag (None until set from the server).

job_id

str: ID of the job.

job_type

Type of job.

Returns
Type Description
str one of 'load', 'copy', 'extract', 'query'.

labels

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

location

str: Location where the job runs.

num_child_jobs

parent_job_id

Returns
Type Description
Optional[str] parent job id.

path

URL path for the job's APIs.

Returns
Type Description
str the path based on project and job ID.

project

Project bound to the job.

Returns
Type Description
str the project (derived from the client).

reservation_usage

Job resource usage breakdown by reservation.

Returns
Type Description
List[google.cloud.bigquery.job.ReservationUsage] Reservation usage stats. Can be empty if not set from the server.

script_statistics

Statistics for a child job of a script.

URL for the job resource.

Returns
Type Description
Optional[str] the URL (None until set from the server).

session_info

[Preview] Information of the session if this job is part of one.

.. versionadded:: 2.29.0

sources

List[google.cloud.bigquery.table.TableReference]): Table(s) from which data is to be loaded.

started

Datetime at which the job was started.

Returns
Type Description
Optional[datetime.datetime] the start time (None until set from the server).

state

Status of the job.

Returns
Type Description
Optional[str] the state (None until set from the server).

transaction_info

Information of the multi-statement transaction if this job is part of one.

Since a scripting query job can execute multiple transactions, this property is only expected on child jobs. Use the list_jobs method with the parent_job parameter to iterate over child jobs.

.. versionadded:: 2.24.0

user_email

E-mail address of user who submitted the job.

Returns
Type Description
Optional[str] the URL (None until set from the server).

write_disposition

Methods

add_done_callback

add_done_callback(fn)

Add a callback to be executed when the operation is complete.

If the operation is not already complete, this will start a helper thread to poll for the status of the operation in the background.

Parameter
Name Description
fn Callable[Future]

The callback to execute when the operation is complete.

cancel

cancel(client=None, retry: retries.Retry = <google.api_core.retry.Retry object>, timeout: float = None)
Parameters
Name Description
timeout Optional[float]

The number of seconds to wait for the underlying HTTP transport before using retry

client Optional[google.cloud.bigquery.client.Client]

the client to use. If not passed, falls back to the client stored on the current dataset.

retry Optional[google.api_core.retry.Retry]

How to retry the RPC.

Returns
Type Description
bool Boolean indicating that the cancel request was sent.

cancelled

cancelled()

Check if the job has been cancelled.

This always returns False. It's not possible to check if a job was cancelled in the API. This method is here to satisfy the interface for google.api_core.future.Future.

Returns
Type Description
bool False

done

done(retry: retries.Retry = <google.api_core.retry.Retry object>, timeout: float = None, reload: bool = True)

Checks if the job is complete.

Parameters
Name Description
timeout Optional[float]

The number of seconds to wait for the underlying HTTP transport before using retry.

reload Optional[bool]

If True, make an API call to refresh the job state of unfinished jobs before checking. Default True.

retry Optional[google.api_core.retry.Retry]

How to retry the RPC. If the job state is DONE, retrying is aborted early, as the job will not change anymore.

Returns
Type Description
bool True if the job is complete, False otherwise.

exception

exception(timeout=None)

Get the exception from the operation, blocking if necessary.

Parameter
Name Description
timeout int

How long to wait for the operation to complete. If None, wait indefinitely.

Returns
Type Description
Optional[google.api_core.GoogleAPICallError] The operation's error.

exists

exists(client=None, retry: retries.Retry = <google.api_core.retry.Retry object>, timeout: float = None)

API call: test for the existence of the job via a GET request

See https://cloud.google.com/bigquery/docs/reference/rest/v2/jobs/get

Parameters
Name Description
timeout Optional[float]

The number of seconds to wait for the underlying HTTP transport before using retry.

client Optional[google.cloud.bigquery.client.Client]

the client to use. If not passed, falls back to the client stored on the current dataset.

retry Optional[google.api_core.retry.Retry]

How to retry the RPC.

Returns
Type Description
bool Boolean indicating existence of the job.

from_api_repr

from_api_repr(resource, client)

Factory: construct a job given its API representation

Parameters
Name Description
resource Dict

dataset job representation returned from the API

client google.cloud.bigquery.client.Client

Client which holds credentials and project configuration for the dataset.

Returns
Type Description
google.cloud.bigquery.job.CopyJob Job parsed from ``resource``.

reload

reload(client=None, retry: retries.Retry = <google.api_core.retry.Retry object>, timeout: float = None)

API call: refresh job properties via a GET request.

See https://cloud.google.com/bigquery/docs/reference/rest/v2/jobs/get

Parameters
Name Description
timeout Optional[float]

The number of seconds to wait for the underlying HTTP transport before using retry.

client Optional[google.cloud.bigquery.client.Client]

the client to use. If not passed, falls back to the client stored on the current dataset.

retry Optional[google.api_core.retry.Retry]

How to retry the RPC.

result

result(retry: retries.Retry = <google.api_core.retry.Retry object>, timeout: float = None)

Start the job and wait for it to complete and get the result.

Parameters
Name Description
timeout Optional[float]

The number of seconds to wait for the underlying HTTP transport before using retry. If multiple requests are made under the hood, timeout applies to each individual request.

retry Optional[google.api_core.retry.Retry]

How to retry the RPC. If the job state is DONE, retrying is aborted early, as the job will not change anymore.

Exceptions
Type Description
google.cloud.exceptions.GoogleAPICallError if the job failed.
concurrent.futures.TimeoutError if the job did not complete in the given timeout.
Returns
Type Description
_AsyncJob This instance.

running

running()

True if the operation is currently running.

set_exception

set_exception(exception)

Set the Future's exception.

set_result

set_result(result)

Set the Future's result.

to_api_repr

to_api_repr()

Generate a resource for _begin.

__init__

__init__(job_id, sources, destination, client, job_config=None)

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

CopyJob

CopyJob(job_id, sources, destination, client, job_config=None)

Asynchronous job: copy data into a table from other tables.

Parameters
Name Description
job_id str

the job's ID, within the project belonging to client.

sources List[google.cloud.bigquery.table.TableReference]

Table from which data is to be loaded.

destination google.cloud.bigquery.table.TableReference

Table into which data is to be loaded.

client google.cloud.bigquery.client.Client

A client which holds credentials and project configuration for the dataset (which requires a project).

job_config Optional[google.cloud.bigquery.job.CopyJobConfig]

Extra configuration options for the copy job.

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Last updated 2025年10月30日 UTC.