Table

Table

Table objects are returned by methods such as Dataset#table, Dataset#createTable, and Dataset#getTables.

Constructor

new Table(dataset, id, optionsopt)

Parameters:
Name Type Attributes Description
dataset Dataset

Dataset instance.
id string

The ID of the table.
options object <optional>

Table options.

Properties
Name Type Attributes Description
location string <optional>

The geographic location of the table, by default this value is inherited from the dataset. This can be used to configure the location of all jobs created through a table instance. It cannot be used to set the actual location of the table. This value will be superseded by any API responses containing location data for the table.
Source:
Example
const {BigQuery} = require('@google-cloud/bigquery');
const bigquery = new BigQuery();
const dataset = bigquery.dataset('my-dataset');

const table = dataset.table('my-table');

Members

createReadStream

Create a readable stream of the rows of data in your table. This method is simply a wrapper around Table#getRows.

Source:
See:
Example
const {BigQuery} = require('@google-cloud/bigquery');
const bigquery = new BigQuery();
const dataset = bigquery.dataset('my-dataset');
const table = dataset.table('my-table');

table.createReadStream(options)
  .on('error', console.error)
  .on('data', row => {})
  .on('end', function() {
    // All rows have been retrieved.
  });

//-
// If you anticipate many results, you can end a stream early to prevent
// unnecessary processing and API requests.
//-
table.createReadStream()
  .on('data', function(row) {
    this.end();
  });

Methods

copy(destination, metadataopt, callbackopt) → {Promise}

Copy data from one table to another, optionally creating that table.

Parameters:
Name Type Attributes Description
destination Table

The destination table.
metadata object <optional>

Metadata to set with the copy operation. The metadata object should be in the format of the configuration.copy property of a Jobs resource.

Properties
Name Type Attributes Description
jobId string <optional>

Custom id for the underlying job.
jobPrefix string <optional>

Prefix to apply to the underlying job id.
callback function <optional>

The callback function.

Properties
Name Type Attributes Description
err error <nullable>

An error returned while making this request
apiResponse object

The full API response.
Source:
Throws:

If a destination other than a Table object is provided.

Type
Error
Example
const {BigQuery} = require('@google-cloud/bigquery');
const bigquery = new BigQuery();
const dataset = bigquery.dataset('my-dataset');

const table = dataset.table('my-table');
const yourTable = dataset.table('your-table');

table.copy(yourTable, (err, apiResponse) => {});

//-
// See the <a href="http://goo.gl/dKWIyS">`configuration.copy`</a> object
for
// all available options.
//-
const metadata = {
  createDisposition: 'CREATE_NEVER',
  writeDisposition: 'WRITE_TRUNCATE'
};

table.copy(yourTable, metadata, (err, apiResponse) => {});

//-
// If the callback is omitted, we'll return a Promise.
//-
table.copy(yourTable, metadata).then((data) => {
  const apiResponse = data[0];
});

copyFrom(sourceTables, metadataopt, callbackopt) → {Promise}

Copy data from multiple tables into this table.

Parameters:
Name Type Attributes Description
sourceTables Table | Array.<Table>

The source table(s) to copy data from.
metadata object <optional>

Metadata to set with the copy operation. The metadata object should be in the format of the configuration.copy property of a Jobs resource.

Properties
Name Type Attributes Description
jobId string <optional>

Custom id for the underlying job.
jobPrefix string <optional>

Prefix to apply to the underlying job id.
callback function <optional>

The callback function.

Properties
Name Type Attributes Description
err error <nullable>

An error returned while making this request
apiResponse object

The full API response.
Source:
Throws:

If a source other than a Table object is provided.

Type
Error
Example
const {BigQuery} = require('@google-cloud/bigquery');
const bigquery = new BigQuery();
const dataset = bigquery.dataset('my-dataset');
const table = dataset.table('my-table');

const sourceTables = [
  dataset.table('your-table'),
  dataset.table('your-second-table')
];

table.copyFrom(sourceTables, (err, apiResponse) => {});

//-
// See the <a href="http://goo.gl/dKWIyS">`configuration.copy`</a> object
for
// all available options.
//-
const metadata = {
  createDisposition: 'CREATE_NEVER',
  writeDisposition: 'WRITE_TRUNCATE'
};

table.copyFrom(sourceTables, metadata, (err, apiResponse) => {});

//-
// If the callback is omitted, we'll return a Promise.
//-
table.copyFrom(sourceTables, metadata).then((data) => {
  const apiResponse = data[0];
});

create(optionsopt, callbackopt) → {Promise}

Create a table.

Parameters:
Name Type Attributes Description
options object <optional>

See Dataset#createTable.
callback function <optional>
Properties
Name Type Attributes Description
err error <nullable>

An error returned while making this request.
table Table

The new Table.
apiResponse object

The full API response.
Source:
Example
const {BigQuery} = require('@google-cloud/bigquery');
const bigquery = new BigQuery();
const dataset = bigquery.dataset('my-dataset');

const table = dataset.table('my-table');

table.create((err, table, apiResponse) => {
  if (!err) {
    // The table was created successfully.
  }
});

//-
// If the callback is omitted, we'll return a Promise.
//-
table.create().then((data) => {
  const table = data[0];
  const apiResponse = data[1];
});

createCopyFromJob(sourceTables, metadataopt, callbackopt) → {Promise}

Copy data from multiple tables into this table.

Parameters:
Name Type Attributes Description
sourceTables Table | Array.<Table>

The source table(s) to copy data from.
metadata object <optional>

Metadata to set with the copy operation. The metadata object should be in the format of the configuration.copy property of a Jobs resource.

Properties
Name Type Attributes Description
jobId string <optional>

Custom job id.
jobPrefix string <optional>

Prefix to apply to the job id.
callback function <optional>

The callback function.

Properties
Name Type Attributes Description
err error <nullable>

An error returned while making this request
job Job

The job used to copy your table.
apiResponse object

The full API response.
Source:
See:
Throws:

If a source other than a Table object is provided.

Type
Error
Example
const {BigQuery} = require('@google-cloud/bigquery');
const bigquery = new BigQuery();
const dataset = bigquery.dataset('my-dataset');
const table = dataset.table('my-table');

const sourceTables = [
  dataset.table('your-table'),
  dataset.table('your-second-table')
];

const callback = (err, job, apiResponse) => {
  // `job` is a Job object that can be used to check the status of the
  // request.
};

table.createCopyFromJob(sourceTables, callback);

//-
// See the <a href="http://goo.gl/dKWIyS">`configuration.copy`</a> object
for
// all available options.
//-
const metadata = {
  createDisposition: 'CREATE_NEVER',
  writeDisposition: 'WRITE_TRUNCATE'
};

table.createCopyFromJob(sourceTables, metadata, callback);

//-
// If the callback is omitted, we'll return a Promise.
//-
table.createCopyFromJob(sourceTables, metadata).then((data) => {
  const job = data[0];
  const apiResponse = data[1];
});

createCopyJob(destination, metadataopt, callbackopt) → {Promise}

Copy data from one table to another, optionally creating that table.

Parameters:
Name Type Attributes Description
destination Table

The destination table.
metadata object <optional>

Metadata to set with the copy operation. The metadata object should be in the format of the configuration.copy property of a Jobs resource.

Properties
Name Type Attributes Description
jobId string <optional>

Custom job id.
jobPrefix string <optional>

Prefix to apply to the job id.
callback function <optional>

The callback function.

Properties
Name Type Attributes Description
err error <nullable>

An error returned while making this request
job Job

The job used to copy your table.
apiResponse object

The full API response.
Source:
See:
Throws:

If a destination other than a Table object is provided.

Type
Error
Example
const {BigQuery} = require('@google-cloud/bigquery');
const bigquery = new BigQuery();
const dataset = bigquery.dataset('my-dataset');
const table = dataset.table('my-table');

const yourTable = dataset.table('your-table');
table.createCopyJob(yourTable, (err, job, apiResponse) => {
  // `job` is a Job object that can be used to check the status of the
  // request.
});

//-
// See the <a href="http://goo.gl/dKWIyS">`configuration.copy`</a> object
for
// all available options.
//-
const metadata = {
  createDisposition: 'CREATE_NEVER',
  writeDisposition: 'WRITE_TRUNCATE'
};

table.createCopyJob(yourTable, metadata, (err, job, apiResponse) => {});

//-
// If the callback is omitted, we'll return a Promise.
//-
table.createCopyJob(yourTable, metadata).then((data) => {
  const job = data[0];
  const apiResponse = data[1];
});

createExtractJob(destination, optionsopt, callback)

Export table to Cloud Storage.

Parameters:
Name Type Attributes Description
destination string | File

Where the file should be exported to. A string or a File object.
options object <optional>

The configuration object.

Properties
Name Type Attributes Description
format string

The format to export the data in. Allowed options are "CSV", "JSON", "AVRO", or "PARQUET". Default: "CSV".
gzip boolean

Specify if you would like the file compressed with GZIP. Default: false.
jobId string <optional>

Custom job id.
jobPrefix string <optional>

Prefix to apply to the job id.
callback function

The callback function.

Properties
Name Type Attributes Description
err error <nullable>

An error returned while making this request
job Job

The job used to export the table.
apiResponse object

The full API response.
Source:
See:
Throws:

  • If destination isn't a File object.

    Type
    Error

  • If destination format isn't recongized.

    Type
    Error
Example
const {Storage} = require('@google-cloud/storage');
const {BigQuery} = require('@google-cloud/bigquery');
const bigquery = new BigQuery();
const dataset = bigquery.dataset('my-dataset');
const table = dataset.table('my-table');

const storage = new Storage({
  projectId: 'grape-spaceship-123'
});
const extractedFile = storage.bucket('institutions').file('2014.csv');

function callback(err, job, apiResponse) {
  // `job` is a Job object that can be used to check the status of the
  // request.
}

//-
// To use the default options, just pass a File
object.
//
// Note: The exported format type will be inferred by the file's extension.
// If you wish to override this, or provide an array of destination files,
// you must provide an `options` object.
//-
table.createExtractJob(extractedFile, callback);

//-
// If you need more customization, pass an `options` object.
//-
const options = {
  format: 'json',
  gzip: true
};

table.createExtractJob(extractedFile, options, callback);

//-
// You can also specify multiple destination files.
//-
table.createExtractJob([
  storage.bucket('institutions').file('2014.json'),
  storage.bucket('institutions-copy').file('2014.json')
], options, callback);

//-
// If the callback is omitted, we'll return a Promise.
//-
table.createExtractJob(extractedFile, options).then((data) => {
  const job = data[0];
  const apiResponse = data[1];
});

createLoadJob(source, metadataopt, callbackopt) → {Promise}

Load data from a local file or Storage File.

By loading data this way, you create a load job that will run your data load asynchronously. If you would like instantaneous access to your data, insert it using {@liink Table#insert}.

Note: The file type will be inferred by the given file's extension. If you wish to override this, you must provide metadata.format.

Parameters:
Name Type Attributes Description
source string | File

The source file to load. A string or a File object.
metadata object <optional>

Metadata to set with the load operation. The metadata object should be in the format of the configuration.load property of a Jobs resource.

Properties
Name Type Attributes Description
format string <optional>

The format the data being loaded is in. Allowed options are "AVRO", "CSV", "JSON", "ORC", or "PARQUET".
jobId string <optional>

Custom job id.
jobPrefix string <optional>

Prefix to apply to the job id.
callback function <optional>

The callback function.

Properties
Name Type Attributes Description
err error <nullable>

An error returned while making this request
job Job

The job used to load your data.
apiResponse object

The full API response.
Source:
See:
Throws:

If the source isn't a string file name or a File instance.

Type
Error
Example
const {Storage} = require('@google-cloud/storage');
const {BigQuery} = require('@google-cloud/bigquery');
const bigquery = new BigQuery();
const dataset = bigquery.dataset('my-dataset');
const table = dataset.table('my-table');

//-
// Load data from a local file.
//-
const callback = (err, job, apiResponse) => {
  // `job` is a Job object that can be used to check the status of the
  // request.
};

table.createLoadJob('./institutions.csv', callback);

//-
// You may also pass in metadata in the format of a Jobs resource. See
// (http://goo.gl/BVcXk4) for a full list of supported values.
//-
const metadata = {
  encoding: 'ISO-8859-1',
  sourceFormat: 'NEWLINE_DELIMITED_JSON'
};

table.createLoadJob('./my-data.csv', metadata, callback);

//-
// Load data from a file in your Cloud Storage bucket.
//-
const storage = new Storage({
  projectId: 'grape-spaceship-123'
});
const data = storage.bucket('institutions').file('data.csv');
table.createLoadJob(data, callback);

//-
// Load data from multiple files in your Cloud Storage bucket(s).
//-
table.createLoadJob([
  storage.bucket('institutions').file('2011.csv'),
  storage.bucket('institutions').file('2012.csv')
], callback);

//-
// If the callback is omitted, we'll return a Promise.
//-
table.createLoadJob(data).then((data) => {
  const job = data[0];
  const apiResponse = data[1];
});

createQueryJob()

Run a query as a job. No results are immediately returned. Instead, your callback will be executed with a Job object that you must ping for the results. See the Job documentation for explanations of how to check on the status of the job.

See BigQuery#createQueryJob for full documentation of this method.

Source:

createQueryStream(query) → {stream}

Run a query scoped to your dataset as a readable object stream.

See BigQuery#createQueryStream for full documentation of this method.

Parameters:
Name Type Description
query object

See BigQuery#createQueryStream for full documentation of this method.
Source:

createWriteStream(metadataopt) → {WritableStream}

Load data into your table from a readable stream of AVRO, CSV, JSON, ORC, or PARQUET data.

Parameters:
Name Type Attributes Description
metadata string | object <optional>

Metadata to set with the load operation. The metadata object should be in the format of the configuration.load property of a Jobs resource. If a string is given, it will be used as the filetype.

Properties
Name Type Attributes Description
jobId string <optional>

Custom job id.
jobPrefix string <optional>

Prefix to apply to the job id.
Source:
See:
Throws:

If source format isn't recognized.

Type
Error
Example
const {BigQuery} = require('@google-cloud/bigquery');
const bigquery = new BigQuery();
const dataset = bigquery.dataset('my-dataset');
const table = dataset.table('my-table');

//-
// Load data from a CSV file.
//-
const request = require('request');

const csvUrl = 'http://goo.gl/kSE7z6';

const metadata = {
  allowJaggedRows: true,
  skipLeadingRows: 1
};

request.get(csvUrl)
  .pipe(table.createWriteStream(metadata))
  .on('job', (job) => {
    // `job` is a Job object that can be used to check the status of the
    // request.
  })
  .on('complete', (job) => {
    // The job has completed successfully.
  });

//-
// Load data from a JSON file.
//-
const fs = require('fs');

fs.createReadStream('./test/testdata/testfile.json')
  .pipe(table.createWriteStream('json'))
  .on('job', (job) => {
    // `job` is a Job object that can be used to check the status of the
    // request.
  })
  .on('complete', (job) => {
    // The job has completed successfully.
  });

delete(callbackopt) → {Promise}

Delete a table and all its data.

Parameters:
Name Type Attributes Description
callback function <optional>
Properties
Name Type Attributes Description
err error <nullable>

An error returned while making this request.
apiResponse object

The full API response.
Source:
See:
Example
const {BigQuery} = require('@google-cloud/bigquery');
const bigquery = new BigQuery();
const dataset = bigquery.dataset('my-dataset');

const table = dataset.table('my-table');

table.delete((err, apiResponse) => {});

//-
// If the callback is omitted, we'll return a Promise.
//-
table.delete().then((data) => {
  const apiResponse = data[0];
});

exists(callbackopt) → {Promise}

Check if the table exists.

Parameters:
Name Type Attributes Description
callback function <optional>
Properties
Name Type Attributes Description
err error <nullable>

An error returned while making this request.
exists boolean

Whether the table exists or not.
Source:
Example
const {BigQuery} = require('@google-cloud/bigquery');
const bigquery = new BigQuery();
const dataset = bigquery.dataset('my-dataset');

const table = dataset.table('my-table');

table.exists((err, exists) => {});

//-
// If the callback is omitted, we'll return a Promise.
//-
table.exists().then((data) => {
  const exists = data[0];
});

extract(destination, optionsopt, callbackopt) → {Promise}

Export table to Cloud Storage.

Parameters:
Name Type Attributes Description
destination string | File

Where the file should be exported to. A string or a File.
options object <optional>

The configuration object.

Properties
Name Type Attributes Default Description
format string <optional>
 "CSV"

The format to export the data in. Allowed options are "AVRO", "CSV", "JSON", "ORC" or "PARQUET".
gzip boolean <optional>

Specify if you would like the file compressed with GZIP. Default: false.
jobId string <optional>

Custom id for the underlying job.
jobPrefix string <optional>

Prefix to apply to the underlying job id.
callback function <optional>

The callback function.

Properties
Name Type Attributes Description
err error <nullable>

An error returned while making this request
apiResponse object

The full API response.
Source:
Throws:

  • If destination isn't a File object.

    Type
    Error

  • If destination format isn't recongized.

    Type
    Error
Example
const Storage = require('@google-cloud/storage');
const {BigQuery} = require('@google-cloud/bigquery');
const bigquery = new BigQuery();
const dataset = bigquery.dataset('my-dataset');
const table = dataset.table('my-table');

const storage = new Storage({
  projectId: 'grape-spaceship-123'
});
const extractedFile = storage.bucket('institutions').file('2014.csv');

//-
// To use the default options, just pass a File
object.
//
// Note: The exported format type will be inferred by the file's extension.
// If you wish to override this, or provide an array of destination files,
// you must provide an `options` object.
//-
table.extract(extractedFile, (err, apiResponse) => {});

//-
// If you need more customization, pass an `options` object.
//-
const options = {
  format: 'json',
  gzip: true
};

table.extract(extractedFile, options, (err, apiResponse) => {});

//-
// You can also specify multiple destination files.
//-
table.extract([
  storage.bucket('institutions').file('2014.json'),
  storage.bucket('institutions-copy').file('2014.json')
], options, (err, apiResponse) => {});

//-
// If the callback is omitted, we'll return a Promise.
//-
table.extract(extractedFile, options).then((data) => {
  const apiResponse = data[0];
});

get(optionsopt, callbackopt) → {Promise}

Get a table if it exists.

You may optionally use this to "get or create" an object by providing an object with autoCreate set to true. Any extra configuration that is normally required for the create method must be contained within this object as well.

Parameters:
Name Type Attributes Description
options options <optional>

Configuration object.

Properties
Name Type Attributes Default Description
autoCreate boolean <optional>
 false

Automatically create the object if it does not exist.
callback function <optional>
Properties
Name Type Attributes Description
err error <nullable>

An error returned while making this request.
table Table

The Table.
apiResponse object

The full API response.
Source:
Example
const {BigQuery} = require('@google-cloud/bigquery');
const bigquery = new BigQuery();
const dataset = bigquery.dataset('my-dataset');

const table = dataset.table('my-table');

table.get((err, table, apiResponse) => {
  // `table.metadata` has been populated.
});

//-
// If the callback is omitted, we'll return a Promise.
//-
table.get().then((data) => {
  const table = data[0];
  const apiResponse = data[1];
});

getMetadata(callbackopt) → {Promise}

Return the metadata associated with the Table.

Parameters:
Name Type Attributes Description
callback function <optional>

The callback function.

Properties
Name Type Attributes Description
err error <nullable>

An error returned while making this request.
metadata object

The metadata of the Table.
apiResponse object

The full API response.
Source:
See:
Example
const {BigQuery} = require('@google-cloud/bigquery');
const bigquery = new BigQuery();
const dataset = bigquery.dataset('my-dataset');

const table = dataset.table('my-table');

table.getMetadata((err, metadata, apiResponse) => {});

//-
// If the callback is omitted, we'll return a Promise.
//-
table.getMetadata().then((data) => {
  const metadata = data[0];
  const apiResponse = data[1];
});

getRows(optionsopt, callbackopt) → {Promise}

Retrieves table data from a specified set of rows. The rows are returned to your callback as an array of objects matching your table's schema.

Parameters:
Name Type Attributes Description
options object <optional>

The configuration object.

Properties
Name Type Attributes Default Description
autoPaginate boolean <optional>
 true

Have pagination handled automatically.
maxApiCalls number <optional>

Maximum number of API calls to make.
maxResults number <optional>

Maximum number of results to return.
callback function <optional>

The callback function.

Properties
Name Type Attributes Description
err error <nullable>

An error returned while making this request
rows array

The table data from specified set of rows.
Source:
See:
Example
const {BigQuery} = require('@google-cloud/bigquery');
const bigquery = new BigQuery();
const dataset = bigquery.dataset('my-dataset');
const table = dataset.table('my-table');

table.getRows((err, rows) => {
  if (!err) {
    // rows is an array of results.
  }
});

//-
// To control how many API requests are made and page through the results
// manually, set `autoPaginate` to `false`.
//-
function manualPaginationCallback(err, rows, nextQuery, apiResponse) {
  if (nextQuery) {
    // More results exist.
    table.getRows(nextQuery, manualPaginationCallback);
  }
}

table.getRows({
  autoPaginate: false
}, manualPaginationCallback);

//-
// If the callback is omitted, we'll return a Promise.
//-
table.getRows().then((data) => {
  const rows = data[0];
  });

insert(rows, optionsopt, callbackopt) → {Promise}

Stream data into BigQuery one record at a time without running a load job.

If you need to create an entire table from a file, consider using Table#load instead.

Parameters:
Name Type Attributes Description
rows object | Array.<object>

The rows to insert into the table.
options object <optional>

Configuration object.

Properties
Name Type Attributes Default Description
createInsertId boolean <optional>
 true

Automatically insert a default row id when one is not provided.
ignoreUnknownValues boolean <optional>
 false

Accept rows that contain values that do not match the schema. The unknown values are ignored.
raw boolean <optional>

If true, the rows argument is expected to be formatted as according to the specification.
schema string | object <optional>

If provided will atomatically create a table if it doesn't already exist. Note that this can take longer than 2 minutes to complete. A comma-separated list of name:type pairs. Valid types are "string", "integer", "float", "boolean", and "timestamp". If the type is omitted, it is assumed to be "string". Example: "name:string, age:integer". Schemas can also be specified as a JSON array of fields, which allows for nested and repeated fields. See a Table resource for more detailed information.
skipInvalidRows boolean <optional>
 false

Insert all valid rows of a request, even if invalid rows exist.
templateSuffix string <optional>

Treat the destination table as a base template, and insert the rows into an instance table named "{destination}{templateSuffix}". BigQuery will manage creation of the instance table, using the schema of the base template table. See Automatic table creation using template tables for considerations when working with templates tables.
callback function <optional>

The callback function.

Properties
Name Type Attributes Description
err error <nullable>

An error returned while making this request.

Properties
Name Type Description
errors Array.<object>

If present, these represent partial failures. It's possible for part of your request to be completed successfully, while the other part was not.
apiResponse object

The full API response.
Source:
See:
Example
const {BigQuery} = require('@google-cloud/bigquery');
const bigquery = new BigQuery();
const dataset = bigquery.dataset('my-dataset');
const table = dataset.table('my-table');

//-
// Insert a single row.
//-
table.insert({
  INSTNM: 'Motion Picture Institute of Michigan',
  CITY: 'Troy',
  STABBR: 'MI'
}, insertHandler);

//-
// Insert multiple rows at a time.
//-
const rows = [
  {
    INSTNM: 'Motion Picture Institute of Michigan',
    CITY: 'Troy',
    STABBR: 'MI'
  },
  // ...
];

table.insert(rows, insertHandler);

//-
// Insert a row as according to the <a href="https://cloud.google.com/bigquery/docs/reference/v2/tabledata/insertAll">specification</a>.
//-
const row = {
  insertId: '1',
  json: {
    INSTNM: 'Motion Picture Institute of Michigan',
    CITY: 'Troy',
    STABBR: 'MI'
  }
};

const options = {
  raw: true
};

table.insert(row, options, insertHandler);

//-
// Handling the response. See <a href="https://developers.google.com/bigquery/troubleshooting-errors">Troubleshooting Errors</a> for best practices on how to handle errors.
//-
function insertHandler(err, apiResponse) {
  if (err) {
    // An API error or partial failure occurred.

    if (err.name === 'PartialFailureError') {
      // Some rows failed to insert, while others may have succeeded.

      // err.errors (object[]):
      // err.errors[].row (original row object passed to `insert`)
      // err.errors[].errors[].reason
      // err.errors[].errors[].message
    }
  }
}

//-
// If the callback is omitted, we'll return a Promise.
//-
table.insert(rows)
  .then((data) => {
    const apiResponse = data[0];
  })
  .catch((err) => {
    // An API error or partial failure occurred.

    if (err.name === 'PartialFailureError') {
      // Some rows failed to insert, while others may have succeeded.

      // err.errors (object[]):
      // err.errors[].row (original row object passed to `insert`)
      // err.errors[].errors[].reason
      // err.errors[].errors[].message
    }
  });

load(source, metadataopt, callbackopt) → {Promise}

Load data from a local file or Storage File.

By loading data this way, you create a load job that will run your data load asynchronously. If you would like instantaneous access to your data, insert it using Table#insert.

Note: The file type will be inferred by the given file's extension. If you wish to override this, you must provide metadata.format.

Parameters:
Name Type Attributes Description
source string | File

The source file to load. A filepath as a string or a File object.
metadata object <optional>

Metadata to set with the load operation. The metadata object should be in the format of the configuration.load property of a Jobs resource.

Properties
Name Type Attributes Description
format string <optional>

The format the data being loaded is in. Allowed options are "AVRO", "CSV", "JSON", "ORC", or "PARQUET".
jobId string <optional>

Custom id for the underlying job.
jobPrefix string <optional>

Prefix to apply to the underlying job id.
callback function <optional>

The callback function.

Properties
Name Type Attributes Description
err error <nullable>

An error returned while making this request
apiResponse object

The full API response.
Source:
Throws:

If the source isn't a string file name or a File instance.

Type
Error
Example
const {BigQuery} = require('@google-cloud/bigquery');
const bigquery = new BigQuery();
const dataset = bigquery.dataset('my-dataset');
const table = dataset.table('my-table');

//-
// Load data from a local file.
//-
table.load('./institutions.csv', (err, apiResponse) => {});

//-
// You may also pass in metadata in the format of a Jobs resource. See
// (http://goo.gl/BVcXk4) for a full list of supported values.
//-
const metadata = {
  encoding: 'ISO-8859-1',
  sourceFormat: 'NEWLINE_DELIMITED_JSON'
};

table.load('./my-data.csv', metadata, (err, apiResponse) => {});

//-
// Load data from a file in your Cloud Storage bucket.
//-
const gcs = require('@google-cloud/storage')({
  projectId: 'grape-spaceship-123'
});
const data = gcs.bucket('institutions').file('data.csv');
table.load(data, (err, apiResponse) => {});

//-
// Load data from multiple files in your Cloud Storage bucket(s).
//-
table.load([
  gcs.bucket('institutions').file('2011.csv'),
  gcs.bucket('institutions').file('2012.csv')
], function(err, apiResponse) {});

//-
// If the callback is omitted, we'll return a Promise.
//-
table.load(data).then(function(data) {
  const apiResponse = data[0];
});

query(query, callbackopt) → {Promise}

Run a query scoped to your dataset.

See BigQuery#query for full documentation of this method.

Parameters:
Name Type Attributes Description
query object

See BigQuery#query for full documentation of this method.
callback function <optional>

See BigQuery#query for full documentation of this method.
Source:

setMetadata(metadata, callbackopt) → {Promise}

Set the metadata on the table.

Parameters:
Name Type Attributes Description
metadata object

The metadata key/value object to set.

Properties
Name Type Description
description string

A user-friendly description of the table.
name string

A descriptive name for the table.
schema string | object

A comma-separated list of name:type pairs. Valid types are "string", "integer", "float", "boolean", "bytes", "record", and "timestamp". If the type is omitted, it is assumed to be "string". Example: "name:string, age:integer". Schemas can also be specified as a JSON array of fields, which allows for nested and repeated fields. See a Table resource for more detailed information.
callback function <optional>

The callback function.

Properties
Name Type Attributes Description
err error <nullable>

An error returned while making this request.
apiResponse object

The full API response.
Source:
See:
Example
const {BigQuery} = require('@google-cloud/bigquery');
const bigquery = new BigQuery();
const dataset = bigquery.dataset('my-dataset');
const table = dataset.table('my-table');

const metadata = {
  name: 'My recipes',
  description: 'A table for storing my recipes.',
  schema: 'name:string, servings:integer, cookingTime:float, quick:boolean'
};

table.setMetadata(metadata, (err, metadata, apiResponse) => {});

//-
// If the callback is omitted, we'll return a Promise.
//-
table.setMetadata(metadata).then((data) => {
  const metadata = data[0];
  const apiResponse = data[1];
});