Python Client for Google BigQuery

|GA| |pypi| |versions|

Querying massive datasets can be time consuming and expensive without the right hardware and infrastructure. Google

BigQuery

• Client Library Documentation

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• Product Documentation

  _

.. |GA| image:: https://img.shields.io/badge/support-GA-gold.svg :target: https://github.com/googleapis/google-cloud-python/blob/master/README.rst#general-availability .. |pypi| image:: https://img.shields.io/pypi/v/google-cloud-bigquery.svg :target: https://pypi.org/project/google-cloud-bigquery/ .. |versions| image:: https://img.shields.io/pypi/pyversions/google-cloud-bigquery.svg :target: https://pypi.org/project/google-cloud-bigquery/ .. _BigQuery: https://cloud.google.com/bigquery/what-is-bigquery .. _Client Library Documentation: https://googleapis.dev/python/bigquery/latest .. _Product Documentation: https://cloud.google.com/bigquery/docs/reference/v2/

Quick Start

In order to use this library, you first need to go through the following steps:

1. Select or create a Cloud Platform project.

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2. Enable billing for your project.

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3. Enable the Google Cloud BigQuery API.

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4. Setup Authentication.

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.. Select or create a Cloud Platform project.: https://console.cloud.google.com/project .. _Enable billing for your project.: https://cloud.google.com/billing/docs/how-to/modify-project#enablebillingfora_project .. _Enable the Google Cloud BigQuery API.: https://cloud.google.com/bigquery .. _Setup Authentication.: https://googleapis.dev/python/google-api-core/latest/auth.html

Installation ~~~~~~~~~~~~

Install this library in a

virtualenv

virtualenv

With

virtualenv

.. _

virtualenv

Supported Python Versions ^^^^^^^^^^^^^^^^^^^^^^^^^ Python >= 3.6, < 3.10

Unsupported Python Versions ^^^^^^^^^^^^^^^^^^^^^^^^^^^ Python == 2.7, Python == 3.5.

The last version of this library compatible with Python 2.7 and 3.5 is

google-cloud-bigquery==1.28.0

Mac/Linux ^^^^^^^^^

.. code-block:: console

pip install virtualenv
virtualenv 
source /bin/activate
/bin/pip install google-cloud-bigquery

Windows ^^^^^^^

.. code-block:: console

pip install virtualenv
virtualenv 
\Scripts\activate
\Scripts\pip.exe install google-cloud-bigquery

Example Usage

Perform a query ~~~~~~~~~~~~~~~

.. code:: python

from google.cloud import bigquery

client = bigquery.Client()
Perform a query.
QUERY = (
    'SELECT name FROM bigquery-public-data.usa_names.usa_1910_2013 '
    'WHERE state = "TX" '
    'LIMIT 100')
query_job = client.query(QUERY)  # API request
rows = query_job.result()  # Waits for query to finish
for row in rows:
    print(row.name)

Instrumenting With OpenTelemetry

This application uses

OpenTelemetry

.. _OpenTelemetry: https://opentelemetry.io

.. code-block:: console

pip install google-cloud-bigquery[opentelemetry] opentelemetry-exporter-google-cloud

After installation, OpenTelemetry can be used in the BigQuery client and in BigQuery jobs. First, however, an exporter must be specified for where the trace data will be outputted to. An example of this can be found here:

.. code-block:: python

from opentelemetry import trace
from opentelemetry.sdk.trace import TracerProvider
from opentelemetry.sdk.trace.export import BatchExportSpanProcessor
from opentelemetry.exporter.cloud_trace import CloudTraceSpanExporter
trace.set_tracer_provider(TracerProvider())
trace.get_tracer_provider().add_span_processor(
    BatchExportSpanProcessor(CloudTraceSpanExporter())
)

In this example all tracing data will be published to the Google

Cloud Trace

OpenTelemetry documentation

.. _OpenTelemetry documentation: https://opentelemetry-python.readthedocs.io .. _Cloud Trace: https://cloud.google.com/trace