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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.

"""Sample that runs a file containing INSERT SQL statements in Big Query.

This could be used to run the INSERT statements in a mysqldump output such as

mysqldump --user=root \

--password='secret-password' \

--host=127.0.0.1 \

--no-create-info sample_db \

--skip-add-locks > sample_db_export.sql

To run, first create tables with the same names and columns as the sample

database. Then run this script.

python insert_sql.py my-project my_dataset sample_db_export.sql

"""

# [START insert_sql]

import argparse

from google.cloud import bigquery

def insert_sql(project, default_dataset, sql_path):

"""Run all the SQL statements in a SQL file."""

client = bigquery.Client(project=project)

with open(sql_path) as f:

for line in f:

line = line.strip()

if not line.startswith('INSERT'):

continue

print('Running query: {}{}'.format(

line[:60],

'...' if len(line) > 60 else ''))

query = client.run_sync_query(line)

# Set use_legacy_sql to False to enable standard SQL syntax.

# This is required to use the Data Manipulation Language features.

#

# For more information about enabling standard SQL, see:

# https://cloud.google.com/bigquery/sql-reference/enabling-standard-sql

query.use_legacy_sql = False

query.default_dataset = client.dataset(default_dataset)

query.run()

if __name__ == "__main__":

parser = argparse.ArgumentParser(

description=__doc__,

formatter_class=argparse.RawDescriptionHelpFormatter)

parser.add_argument('project', help='Google Cloud project name')

parser.add_argument(

'default_dataset', help='Default BigQuery dataset name')

parser.add_argument('sql_path', help='Path to SQL file')

args = parser.parse_args()

insert_sql(args.project, args.default_dataset, args.sql_path)

# [END insert_sql]