Sandbox::https://github.com/google/bigframes/blob/main/samples/snippets/query

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# 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.

# [START bigquery_bigframes_query_bqstorage]

import bigframes.pandas as bpd

import pandas as pd

# Set partial ordering mode for BigQuery DataFrames.

bpd.options.bigquery.ordering_mode = "partial"

def query_bqstorage() -> pd.DataFrame:

"""Queries BigQuery and downloads results using the BigQuery Storage API."""

sql = """

SELECT name FROM `bigquery-public-data.usa_names.usa_1910_current`

WHERE state = 'TX'

LIMIT 100

"""

# Read query results into a server-side DataFrame without downloading data.

df = bpd.read_gbq(sql)

# When downloading results to an in-memory pandas DataFrame,

# bigquery-dataframes automatically uses the BigQuery Storage API if

# installed.

pandas_df = df.to_pandas()

return pandas_df

# Run the sample:

# pandas_df = query_bqstorage()

# print(pandas_df.head())

# [END bigquery_bigframes_query_bqstorage]