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query.py
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#!/usr/bin/env python
# Copyright 2016 Google Inc. All Rights Reserved.
#
# 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
#
# http://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.
"""Command-line application to perform queries in BigQuery.
For more information, see the README.rst.
Example invocation:
$ python query.py '#standardSQL
SELECT corpus
FROM `publicdata.samples.shakespeare`
GROUP BY corpus
ORDER BY corpus'
"""
import argparse
import uuid
from google.cloud import bigquery
def query(query):
client = bigquery.Client()
query_job = client.run_async_query(str(uuid.uuid4()), query)
query_job.begin()
query_job.result() # Wait for job to complete.
# Print the results.
destination_table = query_job.destination
destination_table.reload()
for row in destination_table.fetch_data():
print(row)
def query_standard_sql(query):
client = bigquery.Client()
query_job = client.run_async_query(str(uuid.uuid4()), query)
# Set use_legacy_sql to False to use standard SQL syntax. See:
# https://cloud.google.com/bigquery/docs/reference/standard-sql/enabling-standard-sql
query_job.use_legacy_sql = False
query_job.begin()
query_job.result() # Wait for job to complete.
# Print the results.
destination_table = query_job.destination
destination_table.reload()
for row in destination_table.fetch_data():
print(row)
if __name__ == '__main__':
parser = argparse.ArgumentParser(
description=__doc__,
formatter_class=argparse.RawDescriptionHelpFormatter)
parser.add_argument('query', help='BigQuery SQL Query.')
parser.add_argument(
'--use_standard_sql',
action='store_true',
help='Use standard SQL syntax.')
args = parser.parse_args()
if args.use_standard_sql:
query_standard_sql(args.query)
else:
query(args.query)