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Scheduling Delivery for Amazon S3 Bucket

This documentation page is about delivering content from original dashboards, Looks, and Explores. For information about scheduling dashboards (beta), visit the Scheduling and Sending Dashboards (Beta) documentation page.

Amazon S3 buckets are a common way to store large amounts of data. You or your company will need to have created an S3 bucket with Amazon before Looker can use it.

Looker lets you schedule periodic delivery of a user-defined dashboard, a Look’s visualization, or a Look’s data to your Amazon S3 bucket. If you choose the Amazon S3 destination option, Looker prompts you for additional settings about formatting and about the Amazon S3 bucket as described below. Check out this Community topic for more details about delivering data using an Amazon S3 bucket.

Depending on how your Looker admin has configured your permissions, the default delivery destination may be email, and this setting may not be visible.

Creating and Editing Schedules

After starting a schedule, Looker displays a dialog box with your scheduling choices. If your Looker admin has given you the proper permission, you will see the option to deliver to Amazon S3. Here is an example of a Schedule dialog box for a dashboard:

The following sections explain each scheduling setting for Amazon S3 bucket destinations. For a description of all scheduling options, see the main scheduling documentation page.

Naming Your Delivery

Give the content a unique title in the Give your schedule a name field. The title is used in the filename of the data delivery, and in any error emails that are sent to you in case of any problems delivering the data to your Amazon S3 bucket. The filename of the data delivery follows the format TITLE_TIMESTAMP_HASH, where HASH is a random six-character identifier and TIMESTAMP follows the pattern YYYY-MM-DDTHHMM (for example, the timestamp portion would look like 2019-05-31T0933 for May 31, 2019 at 9:33 AM).

Delivering to S3

In the Where should this data go? section, choose Amazon S3. The S3 Details section appears and prompts you for information about your Amazon S3 bucket:

Check out this Looker Community topic for more details about delivering data using an Amazon S3 bucket.

To learn more about other types of data delivery, see the page for each destination option: email, SFTP, applications using a webhook, or one of several integrated services.

Formatting the Data

In the Format data as section of the pop-up, choose the format for the data in your delivery.

Formats for Dashboards

Formats for Looks

You must save your Explore as a Look to schedule its content.

See the Change in JSON Formatting Looker Community topic for more information about how Looker renders fields in JSON format.

Applying Filters to the Delivery

If you are delivering a Look or dashboard that has filters, you can filter the results delivered to each set of recipients. For example, you might send regional teams results that are filtered for their states of interest:

Click Filters to see and modify the filters associated with this Look or dashboard for your data delivery. Changing these filter options in the Send or Schedule window does not change the filters in your Look or dashboard. If a dashboard filter requires a filter value and the schedule filter is blank, a schedule will display no results upon delivery.

If you change field names that serve as filters in your Looks or dashboards, be sure to review the Filters section of your scheduled Looks and dashboards and update the filters as needed to reflect your changes. If a scheduled content delivery includes filters that no longer function (for example, if the referenced field has changed), the scheduled delivery could expose unfiltered data.

To make custom deliveries even easier, you can use the matches a user attribute filter option if your Looker admins have configured user-specific values, called user attributes. Setting a filter to one of these attributes automatically customizes the results for each user, meaning that you can send customized results to many users even if you select Send only once. You can read more about this on the User attributes documentation page.

Using Advanced Options for Amazon S3 Buckets

The Advanced options section provides additional customization for your schedule. Click the arrow next to Advanced options to expand this menu.

Scheduling Conditions

For Looks not using the JSON—Detailed, Inline format, you can add conditions for when the data will be delivered:

Scheduling Limits

When scheduling Looks, you can limit the size of your delivery. Select one of the following limit options for your data:

If you choose Results in Table, Looker will obey whatever row limitations you've set up in the saved Look. If you choose All Results, Looker will return all the rows of the query, regardless of the saved Look settings, and regardless of Looker's typical 5,000 row limit. This can be desirable for retrieving very large datasets, but you should use caution to ensure the query is not too large for your database.

Streaming Query Results

Streaming refers to Looker's ability to process data in chunks, rather than all at once. If Looker can stream a result set, then unlimited downloads are possible and you can send All Results. In addition to the format requirements mentioned above, there are two cases where streaming is not possible:

  1. Table Calculations: Table calculations cannot be streamed. Therefore, to download unlimited results for a query, you must remove table calculations from the query.
  2. Database Limitations: Some databases cannot stream if pivots are included in the query. For these databases, you must remove pivots to download unlimited results. Some databases can't stream any results, which means that unlimited downloads are not possible. Below is a list of what databases support streaming, as well as databases that support streaming with pivots applied:

Format Options

Apply Visualization Options

For Looks, CSV-formatted dashboards, and Explores (if sending a one-time delivery), you can configure whether you want the data delivery to use the same options as your visualization:

Formatted Data Values

For Looks and the CSV format of dashboards, you can configure the data's formatting:

Single Column Layout

For dashboard deliveries in PDF or Visualization format, you have the option to print your PDF in a single column layout, which displays dashboard tiles in a single vertical column. Check the Use single column layout box to use this option, or leave the box unchecked to show the tiles as they are arranged in the dashboard.

Expand Tables

To display all rows of a data table — rather than just those rows that display in the dashboard tile thumbnail — in a PDF dashboard delivery or download, check the Expand tables box. If you do not see the Expand tables option, talk to your Looker admin about installing the appropriate version of the Chromium renderer for your Looker instance.


By default, Looker uses the time zone associated with your account to determine when to send your data delivery. If you don't have a time zone associated with your account, Looker uses your Application time zone. If you want to specify a different time zone, select Use custom timezone. The time zone you select does not affect the data in your Look or dashboard, just the timing of the delivery.

Paper Size

You have the option to specify the optimal size and orientation of dashboard PDFs by selecting from the Paper size drop-down menu. Large visualizations or groups of overlapping dashboard tiles may need to be resized to fit cleanly on a PDF page. If you do not see the Paper size option, talk to your Looker admin about installing the latest version of the Chromium renderer for your Looker instance.