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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_array_params() -> None:

# [START bigquery_query_params_arrays]

from google.cloud import bigquery

# Construct a BigQuery client object.

client = bigquery.Client()

query = """

SELECT name, sum(number) as count

FROM `bigquery-public-data.usa_names.usa_1910_2013`

WHERE gender = @gender

AND state IN UNNEST(@states)

GROUP BY name

ORDER BY count DESC

LIMIT 10;

"""

job_config = bigquery.QueryJobConfig(

query_parameters=[

bigquery.ScalarQueryParameter("gender", "STRING", "M"),

bigquery.ArrayQueryParameter("states", "STRING", ["WA", "WI", "WV", "WY"]),

]

)

query_job = client.query(query, job_config=job_config) # Make an API request.

for row in query_job:

print("{}: \t{}".format(row.name, row.count))

# [END bigquery_query_params_arrays]