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Showing content from https://cloud.google.com/python/docs/reference/bigquery/1.20.0/google.cloud.bigquery.job.CopyJob below:

Class CopyJob (1.20.0) | Python client library

Class CopyJob (1.20.0)

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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 of TableReference

Table from which data is to be loaded.

destination TableReference

Table into which data is to be loaded.

client Client

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

job_config CopyJobConfig

(Optional) Extra configuration options for the copy job.

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

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

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

add_done_callback

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 Parameter Name Description client Client or ``NoneType``

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

Returns Type Description bool Boolean indicating that the cancel request was sent. 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=<google.api_core.retry.Retry object>)

Refresh the job and checks if it is complete.

Parameter Name Description retry `google.api_core.retry.Retry`

(Optional) How to retry the RPC.

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

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=<google.api_core.retry.Retry object>)
Parameters Name Description client Client or ``NoneType``

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

retry `google.api_core.retry.Retry`

(Optional) How to retry the RPC.

Returns Type Description bool Boolean indicating existence of the job.

Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.

Last updated 2025-07-24 UTC.

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