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# 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_w_named_params() -> None:

# [START bigquery_query_params_named]

from google.cloud import bigquery

# Construct a BigQuery client object.

client = bigquery.Client()

query = """

SELECT word, word_count

FROM `bigquery-public-data.samples.shakespeare`

WHERE corpus = @corpus

AND word_count >= @min_word_count

ORDER BY word_count DESC;

"""

job_config = bigquery.QueryJobConfig(

query_parameters=[

bigquery.ScalarQueryParameter("corpus", "STRING", "romeoandjuliet"),

bigquery.ScalarQueryParameter("min_word_count", "INT64", 250),

]

)

results = client.query_and_wait(

query, job_config=job_config

) # Make an API request.

for row in results:

print("{}: \t{}".format(row.word, row.word_count))

# [END bigquery_query_params_named]