Quotas and limits

This document lists the quotas and system limits that apply to BigQuery. Quotas specify the amount of a countable, shared resource that you can use, and they are defined by Google Cloud services such as BigQuery. System limits are fixed values that cannot be changed.

Google Cloud uses quotas to help ensure fairness and reduce spikes in resource use and availability. A quota restricts how much of a Google Cloud resource your Google Cloud project can use. Quotas apply to a range of resource types, including hardware, software, and network components. For example, quotas can restrict the number of API calls to a service, the number of load balancers used concurrently by your project, or the number of projects that you can create. Quotas protect the community of Google Cloud users by preventing the overloading of services. Quotas also help you to manage your own Google Cloud resources.

The Cloud Quotas system does the following:

  • Monitors your consumption of Google Cloud products and services
  • Restricts your consumption of those resources
  • Provides a way to request changes to the quota value

In most cases, when you attempt to consume more of a resource than its quota allows, the system blocks access to the resource, and the task that you're trying to perform fails.

Quotas generally apply at the Google Cloud project level. Your use of a resource in one project doesn't affect your available quota in another project. Within a Google Cloud project, quotas are shared across all applications and IP addresses.

There are also system limits on BigQuery resources. System limits can't be changed.

By default, BigQuery quotas and limits apply on a per-project basis. Quotas and limits that apply on a different basis are indicated as such; for example, the maximum number of columns per table, or the maximum number of concurrent API requests per user. Specific policies vary depending on resource availability, user profile, Service Usage history, and other factors, and are subject to change without notice.

Quota replenishment

Daily quotas are replenished at regular intervals throughout the day, reflecting their intent to guide rate limiting behaviors. Intermittent refresh is also done to avoid long disruptions when quota is exhausted. More quota is typically made available within minutes rather than globally replenished once daily.

Request a quota increase

To adjust most quotas, use the Google Cloud console. For more information, see Request a quota adjustment.

For step-by-step guidance through the process of requesting a quota increase in Google Cloud console, click Guide me:

Guide me

Cap quota usage

To learn how you can limit usage of a particular resource by creating a quota override, see Create quota override.

Required permissions

To view and update your BigQuery quotas in the Google Cloud console, you need the same permissions as for any Google Cloud quota. For more information, see Google Cloud quota permissions.

Troubleshoot

For information about troubleshooting errors related to quotas and limits, see Troubleshooting BigQuery quota errors.

Jobs

Quotas and limits apply to jobs that BigQuery runs on your behalf whether they are run by using Google Cloud console, the bq command-line tool, or programmatically using the REST API or client libraries.

Query jobs

The following quotas apply to query jobs created automatically by running interactive queries, scheduled queries, and jobs submitted by using the jobs.query and query-type jobs.insert API methods:

Quota Default Notes
Query usage per day Unlimited There is no limit to the number of bytes that can be processed by queries in a project.
View quota in Google Cloud console
Query usage per day per user Unlimited There is no limit to the number of bytes that a user's queries can process each day.
View quota in Google Cloud console
Cloud SQL federated query cross-region bytes per day 1 TB If the BigQuery query processing location and the Cloud SQL instance location are different, then your query is a cross-region query. Your project can run up to 1 TB in cross-region queries per day. See Cloud SQL federated queries.
View quota in Google Cloud console
Cross-cloud transferred bytes per day 1 TB You can transfer up to 1 TB of data per day from an Amazon S3 bucket or from Azure Blob Storage. For more information, see Cross-cloud transfer from Amazon S3 and Azure.
View quota in Google Cloud console

The following limits apply to query jobs created automatically by running interactive queries, scheduled queries, and jobs submitted by using the jobs.query and query-type jobs.insert API methods:

Limit Default Notes
Maximum number of queued interactive queries 1,000 queries Your project can queue up to 1,000 interactive queries. Additional interactive queries that exceed this limit return a quota error.
Maximum number of queued batch queries 20,000 queries Your project can queue up to 20,000 batch queries. Additional batch queries that exceed this limit return a quota error.
Maximum number of concurrent interactive queries against Bigtable external data sources 16 queries Your project can run up to sixteen concurrent queries against a Bigtable external data source.
Maximum number of concurrent queries that contain remote functions 10 queries You can run up to ten concurrent queries with remote functions per project.
Maximum number of concurrent multi-statement queries 1,000 multi-statement queries Your project can run up to 1,000 concurrent multi-statement queries. For other quotas and limits related to multi-statement queries, see Multi-statement queries.
Maximum number of concurrent legacy SQL queries that contain UDFs 6 queries Your project can run up to six concurrent legacy SQL queries with user-defined functions (UDFs). This limit includes both interactive and batch queries. Interactive queries that contain UDFs also count toward the concurrent limit for interactive queries. This limit does not apply to GoogleSQL queries.
Daily query size limit Unlimited By default, there is no daily query size limit. However, you can set limits on the amount of data users can query by creating custom quotas to control query usage per day or query usage per day per user.
Daily destination table update limit See Maximum number of table operations per day. Updates to destination tables in a query job count toward the limit on the maximum number of table operations per day for the destination tables. Destination table updates include append and overwrite operations that are performed by queries that you run by using the Google Cloud console, using the bq command-line tool, or calling the jobs.query and query-type jobs.insert API methods.
Query/multi-statement query execution-time limit 6 hours

A query or multi-statement query can execute for up to 6 hours, and then it fails. However, sometimes queries are retried. A query can be tried up to three times, and each attempt can run for up to 6 hours. As a result, it's possible for a query to have a total runtime of more than 6 hours.

CREATE MODEL job timeout defaults to 24 hours, with the exception of time series, AutoML, and hyperparameter tuning jobs which timeout at 72 hours.
Maximum number of resources referenced per query 1,000 resources A query can reference up to 1,000 total of unique tables, unique views, unique user-defined functions (UDFs), and unique table functions after full expansion. This limit includes the following:
  • Tables, views, UDFs, and table functions directly referenced by the query.
  • Tables, views, UDFs, and table functions referenced by other views/UDFs/table functions referenced in the query.
Maximum SQL query character length 1,024k characters A SQL query can be up to 1,024k characters long. This limit includes comments and white space characters. If your query is longer, you receive the following error: The query is too large. To stay within this limit, consider replacing large arrays or lists with query parameters and breaking a long query into multiple queries in the session.
Maximum unresolved legacy SQL query length 256 KB An unresolved legacy SQL query can be up to 256 KB long. If your query is longer, you receive the following error: The query is too large. To stay within this limit, consider replacing large arrays or lists with query parameters.
Maximum unresolved GoogleSQL query length 1 MB An unresolved GoogleSQL query can be up to 1 MB long. If your query is longer, you receive the following error: The query is too large. To stay within this limit, consider replacing large arrays or lists with query parameters.
Maximum resolved legacy and GoogleSQL query length 12 MB The limit on resolved query length includes the length of all views and wildcard tables referenced by the query.
Maximum number of GoogleSQL query parameters 10,000 parameters A GoogleSQL query can have up to 10,000 parameters.
Maximum request size 10 MB The request size can be up to 10 MB, including additional properties like query parameters.
Maximum response size 10 GB compressed Sizes vary depending on compression ratios for the data. The actual response size might be significantly larger than 10 GB. The maximum response size is unlimited when writing large query results to a destination table.
Maximum row size 100 MB The maximum row size is approximate, because the limit is based on the internal representation of row data. The maximum row size limit is enforced during certain stages of query job execution.
Maximum columns in a table, query result, or view definition 10,000 columns A table, query result, or view definition can have up to 10,000 columns.
Maximum concurrent slots for on-demand pricing 2,000 slots per project

20,000 slots per organization 		With on-demand pricing, your project can have up to 2,000 concurrent slots. There is also a 20,000 concurrent slots cap at the organization level. BigQuery tries to allocate slots fairly between projects within an organization if their total demand is higher than 20,000 slots. BigQuery slots are shared among all queries in a single project. BigQuery might burst beyond this limit to accelerate your queries. To check how many slots you're using, see Monitoring BigQuery using Cloud Monitoring.
Maximum CPU usage per scanned data for on-demand pricing 256 CPU seconds per MiB scanned With on-demand pricing, your query can use up to approximately 256 CPU seconds per MiB of scanned data. If your query is too CPU-intensive for the amount of data being processed, the query fails with a billingTierLimitExceeded error. For more information, see billingTierLimitExceeded.
Multi-statement transaction table mutations 100 tables A transaction can mutate data in at most 100 tables.
Multi-statement transaction partition modifications 100,000 partition modifications A transaction can perform at most 100,000 partition modifications.
BigQuery Omni maximum query result size 20 GiB uncompressed The maximum result size is 20 GiB logical bytes when querying Azure or AWS data. If your query result is larger than 20 GiB, consider exporting the results to Amazon S3 or Blob Storage. For more information, see BigQuery Omni Limitations.
BigQuery Omni total query result size per day 1 TB The total query result sizes for a project is 1 TB per day. For more information, see BigQuery Omni limitations.
BigQuery Omni maximum row size 10 MiB The maximum row size is 10 MiB when querying Azure or AWS data. For more information, see BigQuery Omni Limitations.

Although scheduled queries use features of the BigQuery Data Transfer Service, scheduled queries are not transfers, and are not subject to load job limits.

Export jobs

The following limits apply to jobs that export data from BigQuery by using the bq command-line tool, Google Cloud console, or the export-type jobs.insert API method.

Limit Default Notes
Maximum number of exported bytes per day 50 TiB You can export up to 50 TiB(Tebibytes) of data per day from a project at no cost using the shared slot pool. You can set up a Cloud Monitoring alert policy that provides notification of the number of bytes exported. To export more than 50 TiB(Tebibytes) of data per day, do one of the following:
Maximum number of export jobs per day 100,000 exports You can run up to 100,000 exports per day in a project. To run more than 100,000 exports per day, do one of the following:
Maximum table size exported to a single file 1 GB You can export up to 1 GB of table data to a single file. To export more than 1 GB of data, use a wildcard to export the data into multiple files. When you export data to multiple files, the size of the files varies. In some cases, the size of the output files is more than 1 GB.
Wildcard URIs per export 500 URIs An export can have up to 500 wildcard URIs.

For more information about viewing your current export job usage, see View current quota usage.

Load jobs

The following limits apply when you load data into BigQuery, using the Google Cloud console, the bq command-line tool, or the load-type jobs.insert API method.

Limit Default Notes
Load jobs per table per day 1,500 jobs Load jobs, including failed load jobs, count toward the limit on the number of table operations per day for the destination table. For information about limits on the number of table operations per day for standard tables and partitioned tables, see Tables.
Load jobs per day 100,000 jobs Your project is replenished with a maximum of 100,000 load jobs quota every 24 hours. Failed load jobs count toward this limit. In some cases, it is possible to run more than 100,000 load jobs in 24 hours if a prior day's quota is not fully used.
Maximum columns per table 10,000 columns A table can have up to 10,000 columns.
Maximum size per load job 15 TB The total size for all of your CSV, JSON, Avro, Parquet, and ORC input files can be up to 15 TB.
Maximum number of source URIs in job configuration 10,000 URIs A job configuration can have up to 10,000 source URIs.
Maximum number of files per load job 10,000,000 files A load job can have up to 10 million total files, including all files matching all wildcard URIs.
Maximum number of files in the source Cloud Storage bucket Approximately 60,000,000 files A load job can read from a Cloud Storage bucket containing up to approximately 60,000,000 files.
Load job execution-time limit 6 hours A load job fails if it executes for longer than six hours.
Avro: Maximum size for file data blocks 16 MB The size limit for Avro file data blocks is 16 MB.
CSV: Maximum cell size 100 MB CSV cells can be up to 100 MB in size.
CSV: Maximum row size 100 MB CSV rows can be up to 100 MB in size.
CSV: Maximum file size - compressed 4 GB The size limit for a compressed CSV file is 4 GB.
CSV: Maximum file size - uncompressed 5 TB The size limit for an uncompressed CSV file is 5 TB.
Newline-delimited JSON (ndJSON): Maximum row size 100 MB ndJSON rows can be up to 100 MB in size.
ndJSON: Maximum file size - compressed 4 GB The size limit for a compressed ndJSON file is 4 GB.
ndJSON: Maximum file size - uncompressed 5 TB The size limit for an uncompressed ndJSON file is 5 TB.

If you regularly exceed the load job limits due to frequent updates, consider streaming data into BigQuery instead.

For information on viewing your current load job usage, see View current quota usage.

BigQuery Data Transfer Service load job quota considerations

Load jobs created by BigQuery Data Transfer Service transfers are included in BigQuery's quotas on load jobs. It's important to consider how many transfers you enable in each project to prevent transfers and other load jobs from producing quotaExceeded errors.

You can use the following equation to estimate how many load jobs are required by your transfers:

Number of daily jobs = Number of transfers x Number of tables x Schedule frequency x Refresh window

Where:

  • Number of transfers is the number of transfer configurations you enable in your project.

  • Number of tables is the number of tables created by each specific transfer type. The number of tables varies by transfer type:

    • Campaign Manager transfers create approximately 25 tables.
    • Google Ads transfers create approximately 60 tables.
    • Google Ad Manager transfers create approximately 40 tables.
    • Google Play transfers create approximately 25 tables.
    • Search Ads 360 transfers create approximately 50 tables.
    • YouTube transfers create approximately 50 tables.

  • Schedule frequency describes how often the transfer runs. Transfer run schedules are provided for each transfer type:

  • Refresh window is the number of days to include in the data transfer. If you enter 1, there is no daily backfill.

Copy jobs

The following limits apply to BigQuery jobs for copying tables, including jobs that create a copy, clone, or snapshot of a standard table, table clone, or table snapshot. The limits apply to jobs created by using the Google Cloud console, the bq command-line tool, or the jobs.insert method that specifies the copy field in the job configuration. Copy jobs count toward these limits whether they succeed or fail.

Limit Default Notes
Copy jobs per destination table per day See Table operations per day.
Copy jobs per day 100,000 jobs Your project can run up to 100,000 copy jobs per day.
Cross-region copy jobs per destination table per day 100 jobs Your project can run up to 100 cross-region copy jobs for a destination table per day.
Cross-region copy jobs per day 2,000 jobs Your project can run up to 2,000 cross-region copy jobs per day.
Number of source tables to copy 1,200 source tables You can copy from up to 1,200 source tables per copy job.

For information on viewing your current copy job usage, see Copy jobs - View current quota usage.

The following limits apply to copying datasets:

Limit Default Notes
Maximum number of tables in the source dataset 25,000 tables A source dataset can have up to 25,000 tables.
Maximum number of tables that can be copied per run to a destination dataset in the same region 20,000 tables Your project can copy a maximum of 20,000 tables per run to a destination dataset within the same region. If a source dataset contains more than 20,000 tables, the BigQuery Data Transfer Service schedules sequential runs, each copying up to 20,000 tables, until all tables are copied. These runs are separated by a default interval of 24 hours, which users can customize down to a minimum of 12 hours.
Maximum number of tables that can be copied per run to a destination dataset in a different region 1,000 tables Your project can copy a maximum of 1,000 tables per run to a destination dataset in a different region. If a source dataset contains more than 1,000 tables, the BigQuery Data Transfer Service schedules sequential runs, each copying up to 1,000 tables, until all tables are copied. These runs are separated by a default interval of 24 hours, which users can customize down to a minimum of 12 hours.

Reservations

The following quotas apply to reservations:

Quota Default Notes
Total number of slots for the EU region 5,000 slots The maximum number of BigQuery slots you can purchase in the EU multi-region by using the Google Cloud console.
View quotas in Google Cloud console
Total number of slots for the US region 10,000 slots The maximum number of BigQuery slots you can purchase in the US multi-region by using the Google Cloud console.
View quotas in Google Cloud console
Total number of slots for the us-east1 region 4,000 slots The maximum number of BigQuery slots that you can purchase in the listed region by using the Google Cloud console.
View quotas in Google Cloud console
Total number of slots for the following regions:
  • asia-south1
  • asia-southeast1
  • europe-west2
  • us-central1
  • us-west1
 2,000 slots The maximum number of BigQuery slots that you can purchase in each of the listed regions by using the Google Cloud console.
View quotas in Google Cloud console
Total number of slots for the following regions:
  • asia-east1
  • asia-northeast1
  • asia-northeast3
  • asia-southeast2
  • australia-southeast1
  • europe-north1
  • europe-west1
  • europe-west3
  • europe-west4
  • northamerica-northeast1
  • us-east4
  • southamerica-east1
 1,000 slots The maximum number of BigQuery slots you can purchase in each of the listed regions by using the Google Cloud console.
View quotas in Google Cloud console
Total number of slots for BigQuery Omni regions 100 slots The maximum number of BigQuery slots you can purchase in the BigQuery Omni regions by using the Google Cloud console.
View quotas in Google Cloud console
Total number of slots for all other regions 500 slots The maximum number of BigQuery slots you can purchase in each other region by using the Google Cloud console.
View quotas in Google Cloud console

The following limits apply to reservations:

Limit Value Notes
Number of administration projects for slot reservations 5 projects per organization The maximum number of projects within an organization that can contain a reservation or an active commitment for slots for a given location / region.
Maximum number of standard edition reservations 10 reservations per project The maximum number of standard edition reservations per administration project within an organization for a given location / region.
Maximum number of Enterprise or Enterprise Plus edition reservations 200 reservations per project The maximum number of Enterprise or Enterprise Plus edition reservations per administration project within an organization for a given location / region.
Maximum number of slots in a reservation that is associated with a reservation assignment with a CONTINUOUS job type. 500 slots When you want to create a reservation assignment that has a CONTINUOUS job type, the associated reservation can't have more than 500 slots.

Datasets

The following limits apply to BigQuery datasets:

Limit Default Notes
Maximum number of datasets Unlimited There is no limit on the number of datasets that a project can have.
Number of tables per dataset Unlimited When you use an API call, enumeration performance slows as you approach 50,000 tables in a dataset. The Google Cloud console can display up to 50,000 tables for each dataset.
Number of authorized resources in a dataset's access control list 2,500 resources A dataset's access control list can have up to 2,500 total authorized resources, including authorized views, authorized datasets, and authorized functions. If you exceed this limit due to a large number of authorized views, consider grouping the views into authorized datasets.
Number of dataset update operations per dataset per 10 seconds 5 operations Your project can make up to five dataset update operations every 10 seconds. The dataset update limit includes all metadata update operations performed by the following:
Maximum length of a dataset description 16,384 characters When you add a description to a dataset, the text can be at most 16,384 characters.

Tables

All tables

The following limits apply to all BigQuery tables.

Limit Default Notes
Maximum length of a column name 300 characters Your column name can be at most 300 characters.
Maximum length of a column description 1,024 characters When you add a description to a column, the text can be at most 1,024 characters.
Maximum depth of nested records 15 levels Columns of type RECORD can contain nested RECORD types, also called child records. The maximum nested depth limit is 15 levels. This limit is independent of whether the records are scalar or array-based (repeated).
Maximum length of a table description 16,384 characters When you add a description to a table, the text can be at most 16,384 characters.

Standard tables

The following limits apply to BigQuery standard (built-in) tables:

Limit Default Notes
Table modifications per day 1,500 modifications

Your project can make up to 1,500 table modifications per table per day, whether the modification appends data, updates data, or truncates the table. This limit cannot be changed and includes the combined total of all load jobs, copy jobs, and query jobs that append to or overwrite a destination table.

DML statements do not count toward the number of table modifications per day.

Streaming data does not count toward the number of table modifications per day.
Maximum rate of table metadata update operations per table 5 operations per 10 seconds Your project can make up to five table metadata update operations per 10 seconds per table. This limit applies to all table metadata update operations, performed by the following: This limit also includes the combined total of all load jobs, copy jobs, and query jobs that append to or overwrite a destination table or that use a DML DELETE, INSERT, MERGE, TRUNCATE TABLE, or UPDATE statements to write data to a table. Note that while DML statements count toward this limit, they are not subject to it if it is reached. DML operations have dedicated rate limits.

If you exceed this limit, you get an error message like Exceeded rate limits: too many table update operations for this table. This error is transient; you can retry with an exponential backoff.

To identify the operations that count toward this limit, you can Inspect your logs. Refer to Troubleshoot quota errors for guidance on diagnosing and resolving this error.

Maximum number of columns per table 10,000 columns Each table, query result, or view definition can have up to 10,000 columns.

External tables

The following limits apply to BigQuery tables with data stored on Cloud Storage in Parquet, ORC, Avro, CSV, or JSON format:

Limit Default Notes
Maximum number of source URIs per external table 10,000 URIs Each external table can have up to 10,000 source URIs.
Maximum number of files per external table 10,000,000 files An external table can have up to 10 million files, including all files matching all wildcard URIs.
Maximum size of stored data on Cloud Storage per external table 600 TB An external table can have up to 600 terabytes across all input files. This limit applies to the file sizes as stored on Cloud Storage; this size is not the same as the size used in the query pricing formula. For externally partitioned tables, the limit is applied after partition pruning.
Maximum number of files in the source Cloud Storage bucket Approximately 60,000,000 files An external table can reference a Cloud Storage bucket containing up to approximately 60,000,000 files. For externally partitioned tables, this limit is applied before partition pruning.

Partitioned tables

The following limits apply to BigQuery partitioned tables.

Partition limits apply to the combined total of all load jobs, copy jobs, and query jobs that append to or overwrite a destination partition.

A single job can affect multiple partitions. For example, query jobs and load jobs can write to multiple partitions.

BigQuery uses the number of partitions affected by a job when determining how much of the limit the job consumes. Streaming inserts do not affect this limit.

For information about strategies to stay within the limits for partitioned tables, see Troubleshooting quota errors.

Limit Default Notes
Number of partitions per partitioned table 10,000 partitions Each partitioned table can have up to 10,000 partitions. If you exceed this limit, consider using clustering in addition to, or instead of, partitioning.
Number of partitions modified by a single job 4,000 partitions Each job operation (query or load) can affect up to 4,000 partitions. BigQuery rejects any query or load job that attempts to modify more than 4,000 partitions.
Number of partition modifications per ingestion-time partitioned table per day 5,000 modifications

Your project can make up to 5,000 partition modifications per day, whether the modification appends data, updates data, or truncates an ingestion-time partitioned table.

DML statements do not count toward the number of partition modifications per day.

Number of partition modifications per column-partitioned table per day 30,000 modifications

Your project can make up to 30,000 partition modifications per day for a column-partitioned table.

DML statements do not count toward the number of partition modifications per day.

Streaming data does not count toward the number of partition modifications per day.
Maximum rate of table metadata update operations per partitioned table 50 modifications per 10 seconds Your project can make up to 50 modifications per partitioned table every 10 seconds. This limit applies to all partitioned table metadata update operations, performed by the following: This limit also includes the combined total of all load jobs, copy jobs, and query jobs that append to or overwrite a destination table or that use a DML DELETE, INSERT, MERGE, TRUNCATE TABLE, or UPDATE statements to write data to a table.

If you exceed this limit, you get an error message like Exceeded rate limits: too many partitioned table update operations for this table. This error is transient; you can retry with an exponential backoff.

To identify the operations that count toward this limit, you can Inspect your logs.

Number of possible ranges for range partitioning 10,000 ranges A range-partitioned table can have up to 10,000 possible ranges. This limit applies to the partition specification when you create the table. After you create the table, the limit also applies to the actual number of partitions.

Table clones

The following limits apply to BigQuery table clones:

Limit Default Notes
Maximum number of clones and snapshots in a chain 3 table clones or snapshots Clones and snapshots in combination are limited to a depth of 3. When you clone or snapshot a base table, you can clone or snapshot the result only two more times; attempting to clone or snapshot the result a third time results in an error. For example, you can create clone A of the base table, create snapshot B of clone A, and create clone C of snapshot B. To make additional duplicates of the third-level clone or snapshot, use a copy operation instead.
Maximum number of clones and snapshots for a base table 1,000 table clones or snapshots You can have no more than 1,000 existing clones and snapshots combined of a given base table. For example, if you have 600 snapshots and 400 clones, you reach the limit.

Table snapshots

The following limits apply to BigQuery table snapshots:

Limit Default Notes
Maximum number of concurrent table snapshot jobs 100 jobs Your project can run up to 100 concurrent table snapshot jobs.
Maximum number of table snapshot jobs per day 50,000 jobs Your project can run up to 50,000 table snapshot jobs per day.
Maximum number of table snapshot jobs per table per day 50 jobs Your project can run up to 50 table snapshot jobs per table per day.
Maximum number of metadata updates per table snapshot per 10 seconds. 5 updates Your project can update a table snapshot's metadata up to five times every 10 seconds.
Maximum number of clones and snapshots in a chain 3 table clones or snapshots Clones and snapshots in combination are limited to a depth of 3. When you clone or snapshot a base table, you can clone or snapshot the result only two more times; attempting to clone or snapshot the result a third time results in an error. For example, you can create clone A of the base table, create snapshot B of clone A, and create clone C of snapshot B. To make additional duplicates of the third-level clone or snapshot, use a copy operation instead.
Maximum number of clones and snapshots for a base table 1,000 table clones or snapshots You can have no more than 1,000 existing clones and snapshots combined of a given base table. For example, if you have 600 snapshots and 400 clones, you reach the limit.

Views

The following quotas and limits apply to views and materialized views.

Logical views

The following limits apply to BigQuery standard views:

Limit Default Notes
Maximum number of nested view levels 16 levels BigQuery supports up to 16 levels of nested views. Creating views up to this limit is possible, but querying is limited to 15 levels. If the limit is exceeded, BigQuery returns an INVALID_INPUT error.
Maximum length of a GoogleSQL query used to define a view 256 K characters A single GoogleSQL query that defines a view can be up to 256 K characters long. This limit applies to a single query and does not include the length of the views referenced in the query.
Maximum number of authorized views per dataset See Datasets.
Maximum length of a view description 16,384 characters When you add a description to a view, the text can be at most 16,384 characters.

Materialized views

The following limits apply to BigQuery materialized views:

Limit Default Notes
Base table references (same dataset) 20 materialized views Each base table can be referenced by up to 20 materialized views from the same dataset.
Base table references (same project) 100 materialized views Each base table can be referenced by up to 100 materialized views from the same project.
Base table references (entire organization) 500 materialized views Each base table can be referenced by up to 500 materialized views from the entire organization.
Maximum number of authorized views per dataset See Datasets.
Maximum length of a materialized view description 16,384 characters When you add a description to a materialized view, the text can be at most 16,384 characters.

Search indexes

The following limits apply to BigQuery search indexes:

Limit Default Notes
Number of CREATE INDEX DDL statements per project per region per day 500 operations Your project can issue up to 500 CREATE INDEX DDL operations every day within a region.
Number of search index DDL statements per table per day 20 operations Your project can issue up to 20 CREATE INDEX or DROP INDEX DDL operations per table per day.
Maximum total size of table data per organization allowed for search index creation that does not run in a reservation 100 TB in multi-regions; 20 TB in all other regions You can create a search index for a table if the overall size of tables with indexes in your organization is below your region’s limit: 100 TB for the US and EU multi-regions, and 20 TB for all other regions. If your index-management jobs run in your own reservation, then this limit doesn't apply.

Vector indexes

The following limits apply to BigQuery vector indexes:

Limit Default Notes
Base table minimum number of rows 5,000 rows A table must have at least 5,000 rows to create a vector index.
Base table maximum number of rows 10,000,000,000 rows for index type IVF

200,000,000 for index type TREE_AH		 A table can have at most 10,000,000,000 rows to create a IVF vector index, and 200,000,000 rows to create a TREE_AH vector index.
Maximum size of the array in the indexed column 1,600 elements The column to index can have at most 1,600 elements in the array.
Minimum table size for vector index population 10 MB If you create a vector index on a table that is under 10 MB, then the index is not populated. Similarly, if you delete data from a vector-indexed table such that the table size is under 10 MB, then the vector index is temporarily disabled. This happens regardless of whether you use your own reservation for your index-management jobs. Once a vector-indexed table's size again exceeds 10 MB, its index is populated automatically.
Number of CREATE VECTOR INDEX DDL statements per project per region per day 500 operations For each project, you can issue up to 500 CREATE VECTOR INDEX operations per day for each region.
Number of vector index DDL statements per table per day 10 operations You can issue up to 10 CREATE VECTOR INDEX or DROP VECTOR INDEX operations per table per day.
Maximum total size of table data per organization allowed for vector index creation that does not run in a reservation 6 TB You can create a vector index for a table if the total size of tables with indexes in your organization is under 6 TB. If your index-management jobs run in your own reservation, then this limit doesn't apply.

Routines

The following quotas and limits apply to routines.

User-defined functions

The following limits apply to both temporary and persistent user-defined functions (UDFs) in GoogleSQL queries.

Limit Default Notes
Maximum output per row 5 MB The maximum amount of data that your JavaScript UDF can output when processing a single row is approximately 5 MB.
Maximum concurrent legacy SQL queries with Javascript UDFs 6 queries Your project can have up to six concurrent legacy SQL queries that contain UDFs in JavaScript. This limit includes both interactive and batch queries. This limit does not apply to GoogleSQL queries.
Maximum JavaScript UDF resources per query 50 resources A query job can have up to 50 JavaScript UDF resources, such as inline code blobs or external files.
Maximum size of inline code blob 32 KB An inline code blob in a UDF can be up to 32 KB in size.
Maximum size of each external code resource 1 MB The maximum size of each JavaScript code resource is one MB.

The following limits apply to persistent UDFs:

Limit Default Notes
Maximum length of a UDF name 256 characters A UDF name can be up to 256 characters long.
Maximum number of arguments 256 arguments A UDF can have up to 256 arguments.
Maximum length of an argument name 128 characters A UDF argument name can be up to 128 characters long.
Maximum depth of a UDF reference chain 16 references A UDF reference chain can be up to 16 references deep.
Maximum depth of a STRUCT type argument or output 15 levels A STRUCT type UDF argument or output can be up to 15 levels deep.
Maximum number of fields in STRUCT type arguments or output per UDF 1,024 fields A UDF can have up to 1024 fields in STRUCT type arguments and output.
Maximum number of JavaScript libraries in a CREATE FUNCTION statement 50 libraries A CREATE FUNCTION statement can have up to 50 JavaScript libraries.
Maximum length of included JavaScript library paths 5,000 characters The path for a JavaScript library included in a UDF can be up to 5,000 characters long.
Maximum update rate per UDF per 10 seconds 5 updates Your project can update a UDF up to five times every 10 seconds.
Maximum number of authorized UDFs per dataset See Datasets.

Remote functions

The following limits apply to remote functions in BigQuery.

Limit Default Notes
Maximum number of concurrent queries that contain remote functions 10 queries You can run up to ten concurrent queries with remote functions per project.
Maximum input size 5 MB The maximum total size of all input arguments from a single row is 5 MB.
HTTP response size limit (Cloud Run functions 1st gen) 10 MB HTTP response body from your Cloud Run function 1st gen is up to 10 MB. Exceeding this value causes query failures.
HTTP response size limit (Cloud Run functions 2nd gen or Cloud Run) 15 MB HTTP response body from your Cloud Run function 2nd gen or Cloud Run is up to 15 MB. Exceeding this value causes query failures.
Max HTTP invocation time limit (Cloud Run functions 1st gen) 9 minutes You can set your own time limit for your Cloud Run function 1st gen for an individual HTTP invocation, but the max time limit is 9 minutes. Exceeding the time limit set for your Cloud Run function 1st gen can cause HTTP invocation failures and query failure.
HTTP invocation time limit (Cloud Run functions 2nd gen or Cloud Run) 20 minutes The time limit for an individual HTTP invocation to your Cloud Run function 2nd gen or Cloud Run. Exceeding this value can cause HTTP invocation failures and query failure.
Maximum number of HTTP invocation retry attempts 20 The maximum number of retry attempts for an individual HTTP invocation to your Cloud Run function 1st gen, 2nd gen, or Cloud Run. Exceeding this value can cause HTTP invocation failures and query failure.

Table functions

The following limits apply to BigQuery table functions:

Limit Default Notes
Maximum length of a table function name 256 characters The name of a table function can be up to 256 characters in length.
Maximum length of an argument name 128 characters The name of a table function argument can be up to 128 characters in length.
Maximum number of arguments 256 arguments A table function can have up to 256 arguments.
Maximum depth of a table function reference chain 16 references A table function reference chain can be up to 16 references deep.
Maximum depth of argument or output of type STRUCT 15 levels A STRUCT argument for a table function can be up to 15 levels deep. Similarly, a STRUCT record in a table function's output can be up to 15 levels deep.
Maximum number of fields in argument or return table of type STRUCT per table function 1,024 fields A STRUCT argument for a table function can have up to 1,024 fields. Similarly, a STRUCT record in a table function's output can have up to 1,024 fields.
Maximum number of columns in return table 1,024 columns A table returned by a table function can have up to 1,024 columns.
Maximum length of return table column names 128 characters Column names in returned tables can be up to 128 characters long.
Maximum number of updates per table function per 10 seconds 5 updates Your project can update a table function up to five times every 10 seconds.

Stored procedures for Apache Spark

The following limits apply for BigQuery stored procedures for Apache Spark:

Limit Default Notes
Maximum number of concurrent stored procedure queries 50 You can run up to 50 concurrent stored procedure queries for each project.
Maximum number of in-use CPUs 12,000 You can use up to 12,000 CPUs for each project. Queries that have already been processed don't consume this limit.

You can use up to 2,400 CPUs for each location for each project, except in the following locations:

  • asia-south2
  • australia-southeast2
  • europe-central2
  • europe-west8
  • northamerica-northeast2
  • southamerica-west1

In these locations, you can use up to 500 CPUs for each location for each project.

If you run concurrent queries in a multi-region location and a single region location that is in the same geographic area, then your queries might consume the same concurrent CPU quota.
Maximum total size of in-use standard persistent disks 204.8 TB

You can use up to 204.8 TB standard persistent disks for each location for each project. Queries that have already been processed don't consume this limit.

If you run concurrent queries in a multi-region location and a single region location that is in the same geographic area, then your queries might consume the same standard persistent disk quota.

Notebooks

All Dataform quotas and limits and Colab Enterprise quotas and limits apply to notebooks in BigQuery. The following limits also apply:

Limit Default Notes
Maximum notebook size 20 MB

A notebook's size is the total of its content, metadata, and encoding overhead.

You can view the size of notebook content by expanding the notebook header, clicking View, and then clicking Notebook info.
Maximum number of requests per second to Dataform 100 Notebooks are created and managed through Dataform. Any action that creates or modifies a notebook counts against this quota. This quota is shared with saved queries. For example, if you make 50 changes to notebooks and 50 changes to saved queries within 1 second, you reach the quota.

Saved queries

All Dataform quotas and limits apply to saved queries. The following limits also apply:

Limit Default Notes
Maximum saved query size 10 MB
Maximum number of requests per second to Dataform 100 Saved queries are created and managed through Dataform. Any action that creates or modifies a saved query counts against this quota. This quota is shared with notebooks. For example, if you make 50 changes to notebooks and 50 changes to saved queries within 1 second, you reach the quota.

Data manipulation language

The following limits apply for BigQuery data manipulation language (DML) statements:

Limit Default Notes
DML statements per day Unlimited The number of DML statements your project can run per day is unlimited.

DML statements do not count toward the number of table modifications per day or the number of partitioned table modifications per day for partitioned tables.

DML statements have the following limitations to be aware of.
Concurrent INSERT DML statements per table per day 1,500 statements The first 1,500 INSERT statements run immediately after they are submitted. After this limit is reached, the concurrency of INSERT statements that write to a table is limited to 10. Additional INSERT statements are added to a PENDING queue. Up to 100 INSERT statements can be queued against a table at any given time. When an INSERT statement completes, the next INSERT statement is removed from the queue and run.

If you must run DML INSERT statements more frequently, consider streaming data to your table using the Storage Write API.
Concurrent mutating DML statements per table 2 statements BigQuery runs up to two concurrent mutating DML statements (UPDATE, DELETE, and MERGE) for each table. Additional mutating DML statements for a table are queued.
Queued mutating DML statements per table 20 statements A table can have up to 20 mutating DML statements in the queue waiting to run. If you submit additional mutating DML statements for the table, then those statements fail.
Maximum time in queue for DML statement 6 hours An interactive priority DML statement can wait in the queue for up to six hours. If the statement has not run after six hours, it fails.
Maximum rate of DML statements for each table 25 statements every 10 seconds Your project can run up to 25 DML statements every 10 seconds for each table. Both INSERT and mutating DML statements contribute to this limit.

For more information about mutating DML statements, see INSERT DML concurrency and UPDATE, DELETE, MERGE DML concurrency.

Multi-statement queries

The following limits apply to multi-statement queries in BigQuery.

Limit Default Notes
Maximum number of concurrent multi-statement queries 1,000 multi-statement queries Your project can run up to 1,000 concurrent multi-statement queries.
Cumulative time limit 24 hours The cumulative time limit for a multi-statement query is 24 hours.
Statement time limit 6 hours The time limit for an individual statement within a multi-statement query is 6 hours.

Recursive CTEs in queries

The following limits apply to recursive common table expressions (CTEs) in BigQuery.

Limit Default Notes
Iteration limit 500 iterations The recursive CTE can execute this number of iterations. If this limit is exceeded, an error is produced. To work around iteration limits, see Troubleshoot iteration limit errors.

Row-level security

The following limits apply for BigQuery row-level access policies:

Limit Default Notes
Maximum number of row-access policies per table 400 policies A table can have up to 400 row-access policies.
Maximum number of row-access policies per query 6000 policies A query can access up to a total of 6000 row-access policies.
Maximum number of CREATE / DROP DDL statements per policy per 10 seconds 5 statements Your project can make up to five CREATE or DROP statements per row-access policy resource every 10 seconds.
DROP ALL ROW ACCESS POLICIES statements per table per 10 seconds 5 statements Your project can make up to five DROP ALL ROW ACCESS POLICIES statements per table every 10 seconds.

Data policies

The following limits apply for column-level dynamic data masking:

Limit Default Notes
Maximum number of data policies per policy tag. 8 policies per policy tag Up to eight data policies per policy tag. One of these policies can be used for column-level access controls. Duplicate masking expressions are not supported.

BigQuery ML

The following limits apply to BigQuery ML.

Query jobs

All query job quotas and limits apply to GoogleSQL query jobs that use BigQuery ML statements and functions.

CREATE MODEL statements

The following limits apply to CREATE MODEL jobs:

Limit Default Notes
CREATE MODEL statement queries per 48 hours for each project 20,000 statement queries Some models are trained by utilizing Vertex AI services, which have their own resource and quota management.
Execution-time limit 24 hours or 72 hours CREATE MODEL job timeout defaults to 24 hours, with the exception of time series, AutoML, and hyperparameter tuning jobs which timeout at 72 hours.

Vertex AI and Cloud AI service functions

The following limits apply to functions that use Vertex AI large language models (LLMs) and Cloud AI services:

Function Requests per minute Rows per job Number of concurrently running jobs
ML.GENERATE_TEXT when using a remote model over a gemini-1.5-pro model 60 21,600 5
ML.GENERATE_TEXT when using a remote model over a gemini-1.5-flash model 200 72,000 5
ML.GENERATE_TEXT when using a remote model over the gemini-1.0-pro-vision model in the us-central1 region 100 20,000 1
ML.GENERATE_TEXT when using a remote model over the gemini-1.0-pro-vision model in regions other than us-central1 10 3,600 1
ML.GENERATE_TEXT when using a remote model over a gemini-1.0-pro model in the us-central1 region 300 108,000 5
ML.GENERATE_TEXT when using a remote model over a gemini-1.0-pro model in regions other than us-central1 10 3,600 5
ML.GENERATE_TEXT when using a remote model over an Anthropic Claude model 30 10,800 5
ML.GENERATE_TEXT when using a remote model over a text-bison model 1,600 576,000 5
ML.GENERATE_TEXT when using a remote model over a text-bison-32 model 300 108,000 5
ML.GENERATE_EMBEDDING when used with remote models over Vertex AI multimodalembedding models in supported European single regions 120 14,000 5
ML.GENERATE_EMBEDDING when used with remote models over Vertex AI multimodalembedding models in regions other than supported European single regions 600 25,000 5
ML.GENERATE_EMBEDDING when used with remote models over Vertex AI text-embedding and text-multilingual-embedding models in the us-central1 region 1,500 2,700,000 1
ML.GENERATE_EMBEDDING when used with remote models over Vertex AI text-embedding and text-multilingual-embedding models in regions other than the us-central1 100 324,000 1
ML.PROCESS_DOCUMENT with documents averaging one page 600 150,000 5
ML.PROCESS_DOCUMENT with documents averaging ten pages 600 100,000 5
ML.PROCESS_DOCUMENT with documents averaging fifty pages 600 15,000 5
ML.TRANSCRIBE 200 10,000 5
ML.ANNOTATE_IMAGE 1,800 648,000 5
ML.TRANSLATE 6,000 2,160,000 5
ML.UNDERSTAND_TEXT 600 21,600 5

For more information about quota for Vertex AI LLMs and the Cloud AI service APIs, see the following documents:

Rows-per-job quota represents the highest theoretical number of rows that the system can handle within a 6-hour timeframe. The actual number of processed rows depends on many other factors, including input size and network condition. For example, ML.TRANSCRIBE can process more short audios than long audios.

To request more quota for the BigQuery ML functions, adjust the quota for the associated Vertex AI LLM or Cloud AI service first, and then send an email to [email protected] and include information about the adjusted LLM or Cloud AI service quota. For more information about how to request more quota for these services, see Request a higher quota.

Quota definitions

The following list describes the quotas that apply to Vertex AI and Cloud AI service functions:

  • Functions that call a Vertex AI foundation model use one Vertex AI quota, which is queries per minute (QPM). In this context, the queries are request calls from the function to the Vertex AI model's API. The QPM quota applies to a base model and all versions, identifiers, and tuned versions of that model. For more information on the Vertex AI foundation model quotas, see Quotas per region and model.
  • Functions that call a Cloud AI service use the target service's request quotas. Check the given Cloud AI service's quota reference for details.

  • BigQuery ML uses three quotas:

    • Requests per minute. This quota is the limit on the number of request calls per minute that functions can make to the Vertex AI model's or Cloud AI service's API. This limit applies to each project.

      For functions that call a Vertex AI foundation model, the number of request calls per minute varies depending on the Vertex AI model endpoint, version, and region. This quota is conceptually the same as the QPM quota used by Vertex AI, but it might have a smaller value than the QPM quota for a corresponding model.

    • Rows per job. This quota is the limit on the number of rows allowed for each query job.

    • Number of concurrently running jobs. This quota is the limit per project on the number of SQL queries that can run at the same time for the given function.

The following examples show how to interpret quota limitations in typical situations:

  • I have a quota of 1,000 QPM in Vertex AI, so a query with 100,000 rows should take around 100 minutes. Why is the job running longer?

    Job runtimes can vary even for the same input data. In Vertex AI, remote procedure calls (RPCs) have different priorities in order to avoid quota drainage. When there isn't enough quota, RPCs with lower priorities wait and possibly fail if it takes too long to process them.

  • How should I interpret the rows per job quota?

    In BigQuery, a query can execute for up to six hours. The maximum supported rows is a function of this timeline and your Vertex AI QPM quota, in order to ensure that BigQuery can complete query processing in six hours. Since typically a query can't use the whole quota, this is a lower number than your QPM quota multiplied by 360.

  • What happens if I run a batch inference job on a table with more rows than the rows per job quota, for example 10,000,000 rows?

    BigQuery only processes the number of rows specified by the rows per job quota. You are only charged for the successful API calls for that number of rows, instead of the full 10,000,000 rows in your table. For the rest of the rows, BigQuery responds to the request with a A retryable error occurred: the maximum size quota per query has reached error, which is returned in the status column of the result. You can use this set of SQL scripts or this Dataform package to iterate through inference calls until all rows are successfully processed.

  • I have many more rows to process than the rows per job quota. Will splitting my rows across multiple queries and running them simultaneously help?

    No, because these queries are consuming the same BigQuery ML requests per minute quota and Vertex AI QPM quota. If there are multiple queries that all stay within the rows per job quota and number of concurrently running jobs quota, the cumulative processing exhausts the requests per minute quota.

BI Engine

The following limits apply to BigQuery BI Engine.

Limit Default Notes
Maximum reservation size per project per location (SQL Interface) 250 GiB Applies when using BI Engine with BigQuery. Applies in all cases except Looker Studio without native integration.

You can request an increase of the maximum reservation capacity for your projects. Reservation increases are available in most regions, and might take from 3 days to one week to process.
Maximum reservation size per project per location (Looker Studio) 100 GB Applies when using BI Engine with Looker Studio without native integration. This limit does not affect the size of the tables that you query as BI Engine loads in-memory only the columns used in your queries, not the entire table.
Maximum data model size per table (Looker Studio) 10 GB Applies when using BI Engine with Looker Studio without native integration. If you have a 100 GB reservation per project per location, BI Engine limits the reservation per table to 10 GB. The rest of the available reservation is used for other tables in the project.
Maximum partitions per table (Looker Studio) 500 partitions Applies when using BI Engine with Looker Studio without native integration. BI Engine for Looker Studio supports up to a maximum of 500 partitions per table.
Maximum rows per query (Looker Studio) 150 million Applies when using BI Engine with Looker Studio without native integration. BI Engine for Looker Studio supports up to 150 million rows of queried data, depending on query complexity.

Analytics Hub

The following limits apply to Analytics Hub:

Limit Default Notes
Maximum number of data exchanges per project 500 exchanges You can create up to 500 data exchanges in a project.
Maximum number of listings per data exchange 1,000 listings You can create up to 1,000 listings in a data exchange.
Maximum number of linked datasets per shared dataset 1,000 linked datasets All Analytics Hub subscribers, combined, can have a maximum of 1,000 linked datasets per shared dataset.

API quotas and limits

These quotas and limits apply to BigQuery API requests.

BigQuery API

The following quotas apply to BigQuery API (core) requests:

Quota Default Notes
Requests per day Unlimited Your project can make an unlimited number of BigQuery API requests per day.
View quota in Google Cloud console
Maximum tabledata.list bytes per minute 7.5 GB in multi-regions; 3.7 GB in all other regions Your project can return a maximum of 7.5 GB of table row data per minute via tabledata.list in the us and eu multi-regions, and 3.7 GB of table row data per minute in all other regions. This quota applies to the project that contains the table being read. Other APIs including jobs.getQueryResults and fetching results from jobs.query and jobs.insert can also consume this quota.
View quota in Google Cloud console

The BigQuery Storage Read API can sustain significantly higher throughput than tabledata.list. If you need more throughput than allowed under this quota, consider using the BigQuery Storage Read API.

The following limits apply to BigQuery API (core) requests:

Limit Default Notes
Maximum number of API requests per second per user per method 100 requests A user can make up to 100 API requests per second to an API method. If a user makes more than 100 requests per second to a method, then throttling can occur. This limit does not apply to streaming inserts.
Maximum number of concurrent API requests per user 300 requests If a user makes more than 300 concurrent requests, throttling can occur. This limit does not apply to streaming inserts.
Maximum request header size 16 KiB Your BigQuery API request can be up to 16 KiB, including the request URL and all headers. This limit does not apply to the request body, such as in a POST request.
Maximum jobs.get requests per second 1,000 requests Your project can make up to 1,000 jobs.get requests per second.
Maximum jobs.query response size 20 MB By default, there is no maximum row count for the number of rows of data returned by jobs.query per page of results. However, you are limited to the 20-MB maximum response size. You can alter the number of rows to return by using the maxResults parameter.
Maximum jobs.getQueryResults row size 20 MB The maximum row size is approximate because the limit is based on the internal representation of row data. The limit is enforced during transcoding.
Maximum projects.list requests per second 2 requests Your project can make up to two projects.list requests per second.
Maximum number of tabledata.list requests per second 1,000 requests Your project can make up to 1,000 tabledata.list requests per second.
Maximum rows per tabledata.list response 100,000 rows A tabledata.list call can return up to 100,000 table rows. For more information, see Paging through results using the API.
Maximum tabledata.list row size 100 MB The maximum row size is approximate because the limit is based on the internal representation of row data. The limit is enforced during transcoding.
Maximum tables.insert requests per second 10 requests Your project can make up to 10 tables.insert requests per second. The tables.insert method creates a new, empty table in a dataset. The limit includes SQL statements that create tables, such as CREATE TABLE and queries that write results to destination tables.

BigQuery Connection API

The following quotas apply to BigQuery Connection API requests:

Quota Default Notes
Read requests per minute 1,000 requests per minute Your project can make up to 1,000 requests per minute to BigQuery Connection API methods that read connection data.
View quota in Google Cloud console
Write requests per minute 100 requests per minute Your project can make up to 100 requests per minute to BigQuery Connection API methods that create or update connections.
View quota in Google Cloud console
BigQuery Omni connections created per minute 10 connections created per minute Your project can create up to 10 BigQuery Omni connections total across both AWS and Azure per minute.
BigQuery Omni connection uses 100 connection uses per minute Your project can use a BigQuery Omni connection up to 100 times per minute. This applies to operations which use your connection to access your AWS account, such as querying a table.

BigQuery Migration API

The following limits apply to the BigQuery Migration API:

Limit Default Notes
Individual file size for batch SQL translation 10 MB Each individual source and metadata file can be up to 10 MB. This limit does not apply to the metadata zip file produced by the dwh-migration-dumper command-line extraction tool.
Total size of source files for batch SQL translation 1 GB The total size of all input files uploaded to Cloud Storage can be up to 1 GB. This includes all source files, and all metadata files if you choose to include them.
Input string size for interactive SQL translation 1 MB The string that you enter for interactive SQL translation must not exceed 1 MB. When running interactive translations using the Translation API, this limit applies to the total size of all string inputs.
Maximum configuration file size for interactive SQL translation 50 MB Individual metadata files (compressed) and YAML config files in Cloud Storage must not exceed 50 MB. If the file size exceeds 50 MB, the interactive translator skips that configuration file during translation and produces an error message. One method to reduce the metadata file size is to use the —database or –schema flags to filter on databases when you generate the metadata.

The following quotas apply to the BigQuery Migration API. The following default values apply in most cases. The defaults for your project might be different:

Quota Default Notes

EDWMigration Service List Requests per minute

EDWMigration Service List Requests per minute per user

12,000 requests

2,500 requests

Your project can make up to 12,000 Migration API List requests per minute.

Each user can make up to 2,500 Migration API List requests per minute.

View quotas in Google Cloud console

EDWMigration Service Get Requests per minute

EDWMigration Service Get Requests per minute per user

25,000 requests

2,500 requests

Your project can make up to 25,000 Migration API Get requests per minute.

Each user can make up to 2,500 Migration API Get requests per minute.

View quotas in Google Cloud console

EDWMigration Service Other Requests per minute

EDWMigration Service Other Requests per minute per user

25 requests

5 requests

Your project can make up to 25 other Migration API requests per minute.

Each user can make up to 5 other Migration API requests per minute.

View quotas in Google Cloud console

Interactive SQL translation requests per minute

Interactive SQL translation requests per minute per user

200 requests

50 requests

Your project can make up to 200 SQL translation service requests per minute.

Each user can make up to 50 other SQL translation service requests per minute.

View quotas in Google Cloud console

BigQuery Reservation API

The following quotas apply to BigQuery Reservation API requests:

Quota Default Notes
Requests per minute per region 100 requests Your project can make a total of up to 100 calls to BigQuery Reservation API methods per minute per region.
View quotas in Google Cloud console
Number of SearchAllAssignments calls per minute per region 100 requests Your project can make up to 100 calls to the SearchAllAssignments method per minute per region.
View quotas in Google Cloud console
Requests for SearchAllAssignments per minute per region per user 10 requests Each user can make up to 10 calls to the SearchAllAssignments method per minute per region.
View quotas in Google Cloud console
(In the Google Cloud console search results, search for per user.)

BigQuery Data Policy API

The following limits apply for the Data Policy API (preview):

Limit Default Notes
Maximum number of dataPolicies.list calls. 400 requests per minute per project

600 requests per minute per organization
Maximum number of dataPolicies.testIamPermissions calls. 400 requests per minute per project

600 requests per minute per organization
Maximum number of read requests. 1200 requests per minute per project

1800 requests per minute per organization 		This includes calls to dataPolicies.get and dataPolicies.getIamPolicy.
Maximum number of write requests. 600 requests per minute per project

900 requests per minute per organization

This includes calls to:

IAM API

The following quotas apply when you use Identity and Access Management features in BigQuery to retrieve and set IAM policies, and to test IAM permissions. Data control language (DCL) statements count towards SetIAMPolicy quota.

Quota Default Notes
IamPolicy requests per minute per user 1,500 requests per minute per user Each user can make up to 1,500 requests per minute per project.
View quota in Google Cloud console
IamPolicy requests per minute per project 3,000 requests per minute per project Your project can make up to 3,000 requests per minute.
View quota in Google Cloud console
Single-region SetIAMPolicy requests per minute per project 1,000 requests per minute per project Your single-region project can make up to 1,000 requests per minute.
View quota in Google Cloud console
Multi-region SetIAMPolicy requests per minute per project 2,000 requests per minute per project Your multi-region project can make up to 2,000 requests per minute.
View quota in Google Cloud console
Omni-region SetIAMPolicy requests per minute per project 200 requests per minute per project Your Omni-region project can make up to 200 requests per minute.
View quota in Google Cloud console

Storage Read API

The following quotas apply to BigQuery Storage Read API requests:

Quota Default Notes
Read data plane requests per minute per user 25,000 requests Each user can make up to 25,000 ReadRows calls per minute per project.
View quota in Google Cloud console
Read control plane requests per minute per user 5,000 requests Each user can make up to 5,000 Storage Read API metadata operation calls per minute per project. The metadata calls include the CreateReadSession and SplitReadStream methods.
View quota in Google Cloud console

The following limits apply to BigQuery Storage Read API requests:

Limit Default Notes
Maximum row/filter length 1 MB When you use the Storage Read API CreateReadSession call, you are limited to a maximum length of 1 MB for each row or filter.
Maximum serialized data size 128 MB When you use the Storage Read API ReadRows call, the serialized representation of the data in an individual ReadRowsResponse message cannot be larger than 128 MB.
Maximum concurrent connections 2,000 in multi-regions; 400 in regions You can open a maximum of 2,000 concurrent ReadRows connections per project in the us and eu multi-regions, and 400 concurrent ReadRows connections in other regions. In some cases you may be limited to fewer concurrent connections than this limit.
Maximum per-stream memory usage 1.5 GB The maximum per-stream memory is approximate because the limit is based on the internal representation of the row data. Streams utilizing more than 1.5 GB memory for a single row might fail. For more information, see Troubleshoot resources exceeded issues.

Storage Write API

The following quotas apply to Storage Write API requests. The following quotas can be applied at the folder level. These quotas are then aggregated and shared across all child projects. To enable this configuration, contact Cloud Customer Care.

If you plan to request a higher quota limit, include the quota error message in your request to expedite processing.

Quota Default Notes
Concurrent connections 1,000 in a region; 10,000 in a multi-region

The concurrent connections quota is based on the client project that initiates the Storage Write API request, not the project containing the BigQuery dataset resource. The initiating project is the project associated with the API key or the service account.

Your project can operate on 1,000 concurrent connections in a region, or 10,000 concurrent connections in the US and EU multi-regions.

When you use the default stream in Java or Go, we recommend using Storage Write API multiplexing to write to multiple destination tables with shared connections in order to reduce the number of overall connections that are needed. If you are using the Beam connector with at-least-once semantics, you can set UseStorageApiConnectionPool to TRUE to enable multiplexing.

View quota in Google Cloud console

You can view usage quota and limits metrics for your projects in Cloud Monitoring. Select the concurrent connections limit name based on your region. The options are ConcurrentWriteConnectionsPerProject, ConcurrentWriteConnectionsPerProjectEU, and ConcurrentWriteConnectionsPerProjectRegion for us, eu, and other regions, respectively.

It is strongly recommended that you set up alerts to monitor your quota usage and limits. In addition, if your traffic patterns experience spikes and/or regular organic growth, it might be beneficial to consider over-provisioning your quota by 25 - 50% in order to handle unexpected demand.
Throughput 3 GB per second throughput in multi-regions; 300 MB per second in regions You can stream up to 3 GBps in the us and eu multi-regions, and 300 MBps in other regions per project.
View quota in Google Cloud console

You can view usage quota and limits metrics for your projects in Cloud Monitoring. Select the throughput limit name based on your region. The options are AppendBytesThroughputPerProject, AppendBytesThroughputPerProjectEU, and AppendBytesThroughputPerProjectRegion for us, eu, and other regions, respectively. Write throughput quota is metered based on the project where the target dataset resides, not the client project.

It is strongly recommended that you set up alerts to monitor your quota usage and limits. In addition, if your traffic patterns experience spikes and/or regular organic growth, it might be beneficial to consider over-provisioning your quota by 25 - 50% in order to handle unexpected demand.
CreateWriteStream requests 10,000 streams every hour, per project per region You can call CreateWriteStream up to 10,000 times per hour per project per region. Consider using the default stream if you don't need exactly-once semantics. This quota is per hour but the metric shown in the Google Cloud console is per minute.
Pending stream bytes 10 TB in multi-regions; 1 TB in regions For every commit that you trigger, you can commit up to 10 TB in the us and eu multi-regions, and 1 TB in other regions. There is no quota reporting on this quota.

The following limits apply to Storage Write API requests:

Limit Default Notes
Batch commits 10,000 streams per table You can commit up to 10,000 streams in each BatchCommitWriteStream call.
AppendRows request size 10 MB The maximum request size is 10 MB.

Streaming inserts

The following quotas and limits apply when you stream data into BigQuery by using the legacy streaming API. For information about strategies to stay within these limits, see Troubleshooting quota errors. If you exceed these quotas, you get quotaExceeded errors.

Limit Default Notes
Maximum bytes per second per project in the us and eu multi-regions 1 GB per second

Your project can stream up to 1 GB per second. This quota is cumulative within a given multi-region. In other words, the sum of bytes per second streamed to all tables for a given project within a multi-region is limited to 1 GB.

Exceeding this limit causes quotaExceeded errors.

If necessary, you can request a quota increase by contacting Cloud Customer Care. Request any increase as early as possible, at minimum two weeks before you need it. Quota increase takes time to become available, especially in the case of a significant increase.

Maximum bytes per second per project in all other locations 300 MB per second

Your project can stream up to 300 MB per second in all locations except the us and eu multi-regions. This quota is cumulative within a given multi-region. In other words, the sum of bytes per second streamed to all tables for a given project within a region is limited to 300 MB.

Exceeding this limit causes quotaExceeded errors.

If necessary, you can request a quota increase by contacting Cloud Customer Care. Request any increase as early as possible, at minimum two weeks before you need it. Quota increase takes time to become available, especially in the case of a significant increase.

Maximum row size 10 MB Exceeding this value causes invalid errors.
HTTP request size limit 10 MB

Exceeding this value causes invalid errors.

Internally the request is translated from HTTP JSON into an internal data structure. The translated data structure has its own enforced size limit. It's hard to predict the size of the resulting internal data structure, but if you keep your HTTP requests to 10 MB or less, the chance of hitting the internal limit is low.

Maximum rows per request 50,000 rows A maximum of 500 rows is recommended. Batching can increase performance and throughput to a point, but at the cost of per-request latency. Too few rows per request and the overhead of each request can make ingestion inefficient. Too many rows per request and the throughput can drop. Experiment with representative data (schema and data sizes) to determine the ideal batch size for your data.
insertId field length 128 characters Exceeding this value causes invalid errors.

For additional streaming quota, see Request a quota increase.

Bandwidth

The following quotas apply to the replication bandwidth:

Quota Default Notes
Maximum initial backfill replication bandwidth for each region that has cross-region data egress from the primary replica to secondary replicas. 10 physical GiBps per region quota for most projects
Maximum ongoing replication bandwidth for each region that has cross-region data egress from the primary replica to secondary replicas. 5 physical GiBps per region quota for most projects
Maximum turbo replication bandwidth for each region that has cross-region data egress from the primary replica to secondary replicas. 5 physical GiBps per region default quota for most projects Turbo replication bandwidth quota doesn't apply to the initial backfill operation.

When a project's replication bandwidth exceeds a certain quota, replication from affected projects might stop with the rateLimitExceeded error that includes details of the exceeded quota.