# Copyright 2022 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 get_table_make_schema(table_id: str, schema_path: str) -> None: orig_table_id = table_id orig_schema_path = schema_path # [START bigquery_schema_file_get] from google.cloud import bigquery client = bigquery.Client() # TODO(dev): Change the table_id variable to the full name of the # table you want to get schema from. table_id = "your-project.your_dataset.your_table_name" # TODO(dev): Change schema_path variable to the path # of your schema file. schema_path = "path/to/schema.json" # [END bigquery_schema_file_get] table_id = orig_table_id schema_path = orig_schema_path # [START bigquery_schema_file_get] table = client.get_table(table_id) # Make an API request. # Write a schema file to schema_path with the schema_to_json method. client.schema_to_json(table.schema, schema_path) with open(schema_path, "r", encoding="utf-8") as schema_file: schema_contents = schema_file.read() # View table properties print(f"Got table '{table.project}.{table.dataset_id}.{table.table_id}'.") print(f"Table schema: {schema_contents}") # [END bigquery_schema_file_get]