removeTableClustering.js

// Copyright 2021 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
//
//      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.

'use strict';

function main(datasetId = 'my_dataset', tableId = 'my_table') {
  // [START bigquery_remove_table_clustering]
  // Import the Google Cloud client library
  const {BigQuery} = require('@google-cloud/bigquery');
  const bigquery = new BigQuery();

  async function removeTableClustering() {
    // Removes clustering from a new clustered table named "my_table" in "my_dataset".

    /**
     * TODO(developer): Uncomment the following lines before running the sample.
     */
    // const datasetId = "my_dataset";
    // const tableId = "my_table";
    const schema = 'name:string, city:string, zipcode:integer';

    // For all options, see https://cloud.google.com/bigquery/docs/reference/v2/tables#resource
    const options = {
      schema: schema,
      clustering: {
        fields: ['city', 'zipcode'],
      },
    };

    // Create a new table in the dataset with clustering.
    const [table] = await bigquery
      .dataset(datasetId)
      .createTable(tableId, options);
    console.log(`Table ${tableId} created with clustering.`);

    // Remove clustering from table.
    const metadata = table.metadata;
    metadata.clustering = null;
    const [apiResponse] = await table.setMetadata(metadata);
    console.log(`Table ${tableId} updated clustering:`);
    console.log(apiResponse.clustering);
  }
  // [END bigquery_remove_table_clustering]
  removeTableClustering(datasetId, tableId);
}
main(...process.argv.slice(2));