testbed/googleapis__python-bigquery/samples/snippets/client_query.py

# Copyright 2019 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


def client_query() -> None:
    # [START bigquery_query]
    from google.cloud import bigquery

    # Construct a BigQuery client object.
    client = bigquery.Client()

    query = """
        SELECT name, SUM(number) as total_people
        FROM `bigquery-public-data.usa_names.usa_1910_2013`
        WHERE state = 'TX'
        GROUP BY name, state
        ORDER BY total_people DESC
        LIMIT 20
    """
    rows = client.query_and_wait(query)  # Make an API request.

    print("The query data:")
    for row in rows:
        # Row values can be accessed by field name or index.
        print("name={}, count={}".format(row[0], row["total_people"]))
    # [END bigquery_query]