TABLE_STORAGE_USAGE_TIMELINE view

Preview

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The INFORMATION_SCHEMA.TABLE_STORAGE_USAGE_TIMELINE view provides daily totals of storage usage for the past 90 days for the following types of tables:

• Standard tables
• Materialized views
• Table clones that have a delta in bytes from the base table
• Table snapshots that have a delta in bytes from the base table

Tables that don't have billable bytes aren't included in the INFORMATION_SCHEMA.TABLE_STORAGE_USAGE_TIMELINE view. This includes the following types of tables:

• External tables
• Anonymous tables
• Empty tables
• Table clones that have no delta in bytes from the base table
• Table snapshots that have no delta in bytes from the base table

When you query the INFORMATION_SCHEMA.TABLE_STORAGE_USAGE_TIMELINE view, the query results contain one row per day for each table or materialized view for the current project.

The data in this table is not kept in real time. It takes approximately 72 hours for table data to be reflected in this view.

Storage usage is returned in MB second. For example, if a project uses 1,000,000 physical bytes for 86,400 seconds (24 hours), the total physical usage is 86,400,000,000 byte seconds, which is converted to 82,397 MB seconds, as shown in the following example:

86,400,000,000 / 1,024 / 1,024 = 82,397

This is the value that would be returned by the BILLABLE_TOTAL_PHYSICAL_USAGE column.

For more information, see Storage pricing details.

Note: Data returned by this view is complete for October 1, 2023 and after. You can query the view for dates prior to that, but the data returned is incomplete.

Required permissions

To query the INFORMATION_SCHEMA.TABLE_STORAGE_USAGE_TIMELINE view, you need the following Identity and Access Management (IAM) permissions:

• bigquery.tables.get
• bigquery.tables.list

Each of the following predefined IAM roles includes the preceding permissions:

• roles/bigquery.dataViewer
• roles/bigquery.dataEditor
• roles/bigquery.metadataViewer
• roles/bigquery.admin

For queries with a region qualifier, you must have permissions for the project.

For more information about BigQuery permissions, see Access control with IAM.

Schema

The INFORMATION_SCHEMA.TABLE_STORAGE_USAGE_TIMELINE view has the following schema:

USAGE_DATE	DATE	The billing date for the bytes shown, using the America/Los_Angeles time zone
PROJECT_ID	STRING	The project ID of the project that contains the dataset
TABLE_CATALOG	STRING	The project ID of the project that contains the dataset
PROJECT_NUMBER	INT64	The project number of the project that contains the dataset
TABLE_SCHEMA	STRING	The name of the dataset that contains the table or materialized view, also referred to as the datasetId
TABLE_NAME	STRING	The name of the table or materialized view, also referred to as the tableId
BILLABLE_TOTAL_LOGICAL_USAGE	INT64	The total logical usage, in MB second. Returns 0 if the dataset uses the physical storage billing model.
BILLABLE_ACTIVE_LOGICAL_USAGE	INT64	The logical usage that is less than 90 days old, in MB second. Returns 0 if the dataset uses the physical storage billing model.
BILLABLE_LONG_TERM_LOGICAL_USAGE	INT64	The logical usage that is more than 90 days old, in MB second. Returns 0 if the dataset uses the physical storage billing model.
BILLABLE_TOTAL_PHYSICAL_USAGE	INT64	The total usage in MB second. This includes physical bytes used for fail-safe and time travel storage. Returns 0 if the dataset uses the logical storage billing model.
BILLABLE_ACTIVE_PHYSICAL_USAGE	INT64	The physical usage that is less than 90 days old, in MB second. This includes physical bytes used for fail-safe and time travel storage. Returns 0 if the dataset uses the logical storage billing model.
BILLABLE_LONG_TERM_PHYSICAL_USAGE	INT64	The physical usage that is more than 90 days old, in MB second. Returns 0 if the dataset uses the logical storage billing model.

Scope and syntax

Queries against this view must include a region qualifier. The following table explains the region scope for this view:

View name	Resource scope	Region scope
[PROJECT_ID.]`region-REGION`.INFORMATION_SCHEMA.TABLE_STORAGE_USAGE_TIMELINE[_BY_PROJECT]	Project level	REGION

Replace the following:

• Optional: PROJECT_ID: the ID of your Google Cloud project. If not specified, the default project is used.

• REGION: any dataset region name. For example, `region-us`.

Note: You must use a region qualifier to query INFORMATION_SCHEMA views. The location of the query execution must match the region of the INFORMATION_SCHEMA view.

The following example shows how to return storage information for tables in a specified project:

SELECT * FROM myProject.`region-REGION`.INFORMATION_SCHEMA.TABLE_STORAGE_USAGE_TIMELINE;

The following example shows how to return storage information for tables in a specified region:

SELECT * FROM `region-REGION`.INFORMATION_SCHEMA.TABLE_STORAGE_USAGE_TIMELINE;

Examples

Note: INFORMATION_SCHEMA view names are case-sensitive.

Example 1

The following example sums the storage usage by day for projects in a specified region.

SELECT
  usage_date,
  project_id,
  SUM(billable_total_logical_usage) AS billable_total_logical_usage,
  SUM(billable_active_logical_usage) AS billable_active_logical_usage,
  SUM(billable_long_term_logical_usage) AS billable_long_term_logical_usage,
  SUM(billable_total_physical_usage) AS billable_total_physical_usage,
  SUM(billable_active_physical_usage) AS billable_active_physical_usage,
  SUM(billable_long_term_physical_usage) AS billable_long_term_physical_usage
FROM
  `region-REGION`.INFORMATION_SCHEMA.TABLE_STORAGE_USAGE_TIMELINE
GROUP BY
  1,
  2
ORDER BY
  usage_date;

The result is similar to the following:

+-------------------------+------------------------------+-------------------------------+-----------------------------------+-------------------------------+--------------------------------+-------------------------------------+
| usage_date | project_id | billable_total_logical_usage | billable_active_logical_usage | billable_long_term_logical_usage  | billable_total_physical_usage | billable_active_physical_usage | billable_long_term_physical_usage   |
+-------------------------+------------------------------+-------------------------------+-----------------------------------+-------------------------------+--------------------------------+-------------------------------------+
| 2023-04-03 | project_A  | 305085738096                 | 7667321458                    | 297418416638                      | 74823954823                   | 124235724                      | 74699719099                         |
+-------------------------+------------------------------+-------------------------------+-----------------------------------+-------------------------------+--------------------------------+-------------------------------------+
| 2023-04-04 | project_A  | 287033241105                 | 7592334614                    | 279440906491                      | 75071991788                   | 200134561                      | 74871857227                         |
+-------------------------+------------------------------+-------------------------------+-----------------------------------+-------------------------------+--------------------------------+-------------------------------------+
| 2023-04-03 | project_B  | 478173930912                 | 8137372626                    | 470036558286                      | 0                             | 0                              | 0                                   |
+-------------------------+------------------------------+-------------------------------+-----------------------------------+-------------------------------+--------------------------------+-------------------------------------+
| 2023-04-04 | project_B  | 496648915405                 | 7710451723                    | 488938463682                      | 0                             | 0                              | 0                                   |
+-------------------------+------------------------------+-------------------------------+-----------------------------------+-------------------------------+--------------------------------+-------------------------------------+

Example 2

The following example shows the storage usage for a specified day for tables in a dataset that uses logical storage.

SELECT
  usage_date,
  table_schema,
  table_name,
  billable_total_logical_usage
FROM
  `region-REGION`.INFORMATION_SCHEMA.TABLE_STORAGE_USAGE_TIMELINE
WHERE
  project_id = 'PROJECT_ID'
  AND table_schema = 'DATASET_NAME'
  AND usage_date = 'USAGE_DATE'
ORDER BY
  billable_total_logical_usage DESC;

The result is similar to the following:

+--------------+--------------+------------+------------------------------+
| usage_date   | table_schema | table_name | billable_total_logical_usage |
+--------------+--------------+------------+------------------------------+
|  2023-04-03  | dataset_A    | table_4    | 734893409201                 |
+--------------+--------------+------------+------------------------------+
|  2023-04-03  | dataset_A    | table_1    | 690070445455                 |
+--------------+--------------+------------+------------------------------+
|  2023-04-03  | dataset_A    | table_3    |  52513713981                 |
+--------------+--------------+------------+------------------------------+
|  2023-04-03  | dataset_A    | table_2    |   8894535355                 |
+--------------+--------------+------------+------------------------------+

Example 3

The following example shows the storage usage for the most recent usage date for tables in a dataset that uses physical storage.

SELECT
  usage_date,
  table_schema,
  table_name,
  billable_total_physical_usage
FROM
  (
    SELECT
      *,
      ROW_NUMBER()
        OVER (PARTITION BY project_id, table_schema, table_name ORDER BY usage_date DESC) AS rank
    FROM
      `region-REGION`.INFORMATION_SCHEMA.TABLE_STORAGE_USAGE_TIMELINE
  )
WHERE
  rank = 1
  AND project_id = 'PROJECT_ID'
  AND table_schema ='DATASET_NAME'
ORDER BY
  usage_date;

The result is similar to the following:

+--------------+--------------+------------+-------------------------------+
| usage_date   | table_schema | table_name | billable_total_physical_usage |
+--------------+--------------+------------+-------------------------------+
|  2023-04-12  | dataset_A    | table_4    |  345788341123                 |
+--------------+--------------+------------+-------------------------------+
|  2023-04-12  | dataset_A    | table_1    |             0                 |
+--------------+--------------+------------+-------------------------------+
|  2023-04-12  | dataset_A    | table_3    | 9123481400212                 |
+--------------+--------------+------------+-------------------------------+
|  2023-04-12  | dataset_A    | table_2    |    1451334553                 |
+--------------+--------------+------------+-------------------------------+

Example 4

The following example joins the TABLE_OPTIONS and TABLE_STORAGE_USAGE_TIMELINE views to get storage usage details based on tags.

SELECT * FROM region-REGION.INFORMATION_SCHEMA.TABLE_OPTIONS
    INNER JOIN region-REGION.INFORMATION_SCHEMA.TABLE_STORAGE_USAGE_TIMELINE
    USING (TABLE_CATALOG, TABLE_SCHEMA, TABLE_NAME)
    WHERE option_name='tags'
    AND CONTAINS_SUBSTR(option_value, '(\"tag_namespaced_key\", \"tag_namespaced_value\")')