Create a model

Create a model within an existing dataset.

Code sample

Java

Before trying this sample, follow the Java setup instructions in the BigQuery quickstart using client libraries. For more information, see the BigQuery Java API reference documentation. 

import com.google.cloud.bigquery.BigQuery;
import com.google.cloud.bigquery.BigQueryException;
import com.google.cloud.bigquery.BigQueryOptions;
import com.google.cloud.bigquery.Job;
import com.google.cloud.bigquery.JobInfo;
import com.google.cloud.bigquery.QueryJobConfiguration;

// Sample to create a model
public class CreateModel {

  public static void main(String[] args) {
    // TODO(developer): Replace these variables before running the sample.
    String datasetName = "MY_DATASET_NAME";
    String modelName = "MY_MODEL_NAME";
    String sql =
        "CREATE MODEL `"
            + datasetName
            + "."
            + modelName
            + "`"
            + "OPTIONS ( "
            + "model_type='linear_reg', "
            + "max_iteration=1, "
            + "learn_rate=0.4, "
            + "learn_rate_strategy='constant' "
            + ") AS ( "
            + "SELECT 'a' AS f1, 2.0 AS label "
            + "UNION ALL "
            + "SELECT 'b' AS f1, 3.8 AS label "
            + ")";
    createModel(sql);
  }

  public static void createModel(String sql) {
    try {
      // Initialize client that will be used to send requests. This client only needs to be created
      // once, and can be reused for multiple requests.
      BigQuery bigquery = BigQueryOptions.getDefaultInstance().getService();

      QueryJobConfiguration config = QueryJobConfiguration.newBuilder(sql).build();

      // create a model using query and it will wait to complete job.
      Job job = bigquery.create(JobInfo.of(config));
      job = job.waitFor();
      if (job.isDone()) {
        System.out.println("Model created successfully");
      } else {
        System.out.println("Model was not created");
      }
    } catch (BigQueryException | InterruptedException e) {
      System.out.println("Model was not created. \n" + e.toString());
    }
  }
}

Node.js

Before trying this sample, follow the Node.js setup instructions in the BigQuery quickstart using client libraries. For more information, see the BigQuery Node.js API reference documentation. 

// Import the Google Cloud client library
const {BigQuery} = require('@google-cloud/bigquery');
const bigquery = new BigQuery();

async function createModel() {
  // Creates a model named "my_model" in "my_dataset".

  /**
   * TODO(developer): Uncomment the following lines before running the sample
   */
  // const datasetId = "my_dataset";
  // const modelId = "my_model";

  const query = `CREATE OR REPLACE MODEL \`${datasetId}.${modelId}\`
       OPTIONS(model_type='logistic_reg') AS
       SELECT
         IF(totals.transactions IS NULL, 0, 1) AS label,
         IFNULL(device.operatingSystem, "") AS os,
         device.isMobile AS is_mobile,
         IFNULL(geoNetwork.country, "") AS country,
         IFNULL(totals.pageviews, 0) AS pageviews
       FROM
         \`bigquery-public-data.google_analytics_sample.ga_sessions_*\`
       WHERE
         _TABLE_SUFFIX BETWEEN '20160801' AND '20170631'
       LIMIT  100000;`;

  const queryOptions = {
    query: query,
  };

  // Run query to create a model
  const [job] = await bigquery.createQueryJob(queryOptions);

  // Wait for the query to finish
  await job.getQueryResults();

  console.log(`Model ${modelId} created.`);
}
createModel();

What's next

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