This page explains the concept of data location and the different locations where you can create datasets. To learn how to set the location for your dataset, see Creating datasets. For information on regional pricing for BigQuery, see the Pricing page. A multi-region is a large geographic area, such as the United States, that contains two or more geographic places.
You specify a location for storing your BigQuery data when you create a dataset. After you create the dataset, the location cannot be changed, but you can copy the dataset to a different locationor manually move recreate the dataset in a different location.How to load CSV file into Google BigQuery
BigQuery processes queries in the same location as the dataset that contains the tables you're querying. BigQuery stores your data in the selected location in accordance with the Service Specific Terms. When loading data, querying data, or exporting data, BigQuery determines the location to run the job based on the datasets referenced in the request. For example, if a query references a table in a dataset stored in the asia-northeast1 region, the query job will run in that region.
If a query does not reference any tables or other resources contained within datasets, and no destination table is provided, the query job will run in the location of the project's flat-rate reservation. If the project does not have a flat-rate reservation, the job runs in the US region.
If more than one flat-rate reservation is associated with the project, the location of the reservation with the largest number of slots is where the job runs. BigQuery returns an error if the specified location does not match the location of the datasets in the request. For more information on Cloud Storage locations, see Bucket locations in the Cloud Storage documentation.
You cannot change the location of a dataset after it is created, but you can make a copy of the dataset. You cannot move a dataset from one location to another, but you can manually move recreate a dataset.
Google BigQuery Data Import
To see steps for copying a dataset, including across regions, see Copying datasets. Export the data from your BigQuery tables to a regional or multi-region Cloud Storage bucket in the same location as your dataset.
For example, if your dataset is in the EU multi-region location, export your data into a regional or multi-region bucket in the EU. There are no charges for exporting data from BigQuery, but you do incur charges for storing the exported data in Cloud Storage. BigQuery exports are subject to the limits on export jobs.To see steps for copying a dataset, including across regions, see Copying datasets.
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When copying a tablethe datasets containing the source table and destination table must reside in the same location. As you approach thousands of datasets in a project, classic UI performance begins to degrade, and listing datasets becomes slower. When you create a dataset in BigQuery, the dataset name must be unique per project. The dataset name:. Is case-sensitive: mydataset and MyDataset can co-exist in the same project. At a minimum, to create a dataset, you must be granted bigquery.
The following predefined Cloud IAM roles include bigquery. Go to the Cloud Console. Optional For Data locationchoose a geographic location for the dataset. If you leave the value set to Defaultthe location is set to US. After a dataset is created, the location can't be changed. Click the down arrow icon next to your project name in the navigation and click Create new dataset.
For Data locationchoose a location for the dataset. The default value is Unspecified which sets the dataset location to US. In integer days: Any table created in the dataset is deleted after integer days from its creation time. This value is applied if you do not set a table expiration when the table is created.
Data expiration refers to the default table expiration for new tables created in the dataset. You cannot currently set a default partition expiration in the BigQuery web UI when you create a dataset.
You can set a default partition expiration after the dataset is created by using the command-line tool or the API. Use the bq mk command with the --location flag to create a new dataset.
You can set a default value for the location by using the. The minimum value is seconds one hour. The expiration time evaluates to the current time plus the integer value. The default partition expiration has no minimum value. The expiration time evaluates to the partition's date plus the integer value. For example, the following command creates a dataset named mydataset with data location set to USa default table expiration of seconds 1 hourand a description of This is my dataset.
Instead of using the --dataset flag, the command uses the -d shortcut. If you omit -d and --datasetthe command defaults to creating a dataset. Call the datasets. Before trying this sample, follow the Node. For more information, see the BigQuery Node. Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4. For details, see the Google Developers Site Policies.
Why Google close Groundbreaking solutions. Transformative know-how. Whether your business is early in its journey or well on its way to digital transformation, Google Cloud's solutions and technologies help chart a path to success. Learn more. Keep your data secure and compliant.Output only. The fully-qualified unique name of the dataset in the format projectId:datasetId.
The dataset name without the project name is given in the datasetId field. When creating a new dataset, leave this field blank, and instead specify the datasetId field. A URL that can be used to access the resource again. The default lifetime of all tables in the dataset, in milliseconds The minimum value is milliseconds one hour. Once this property is set, all newly-created tables in the dataset will have an expirationTime property set to the creation time plus the value in this property, and changing the value will only affect new tables, not existing ones.
When the expirationTime for a given table is reached, that table will be deleted automatically. If a table's expirationTime is modified or removed before the table expires, or if you provide an explicit expirationTime when creating a table, that value takes precedence over the default expiration time indicated by this property. When new time-partitioned tables are created in a dataset where this property is set, the table will inherit this value, propagated as the TimePartitioning.
If you set TimePartitioning. When creating a partitioned table, if defaultPartitionExpirationMs is set, the defaultTableExpirationMs value is ignored and the table will not be inherit a table expiration deadline. The labels associated with this dataset. You can use these to organize and group your datasets. You can set this property when inserting or updating a dataset. See Creating and Updating Dataset Labels for more information. An object containing a list of "key": value pairs.
An array of objects that define dataset access for one or more entities. You can set this property when inserting or updating a dataset in order to control who is allowed to access the data. If unspecified at dataset creation time, BigQuery adds default dataset access for the following entities: access.
For example: fred example. Any users signed in with the domain specified will be granted the specified access. Example: "example. Possible values include: projectOwners: Owners of the enclosing project. Maps to similarly-named IAM members.
Queries executed against that view will have read access to tables in this dataset. The role field is not required when this field is set. If that view is updated by any user, access to the view needs to be granted again via an update operation. The date when this dataset or any of its tables was last modified, in milliseconds since the epoch.
The geographic location where the dataset should reside. Possible values include EU and US.BigQuery is Google's fully managed, NoOps, low cost analytics database. With BigQuery you can query terabytes and terabytes of data without having any infrastructure to manage and don't need a database administrator.
BigQuery uses familiar SQL and it can take advantage of pay-as-you-go model. BigQuery allows you to focus on analyzing data to find meaningful insights. This codelab uses BigQuery resources withing the BigQuery sandbox limits. A billing account is not required. If you later want to remove the sandbox limits, you can add a billing account by signing up for the Google Cloud Platform free trial. First, create a new dataset in the project.
A dataset is composed of multiple tables. To create a dataset, click the project name under the resources pane, then click the Create dataset button:. This virtual machine is loaded with all the development tools you'll need. It offers a persistent 5GB home directory, and runs on the Google Cloud, greatly enhancing network performance and authentication. Much, if not all, of your work in this lab can be done with simply a browser or your Google Chromebook.
You can load this file directly using the bq command line utility. As part of the load command, you'll also describe the schema of the file. You can learn more about the bq command line in the documentation.
You can see the table schema in the Schema view on the right. Find out how much data is in the table, by navigating to the Details view:. In a few seconds, the result will be listed in the bottom, and it'll also tell you how much data was processed:. This query processed BigQuery only processes the bytes from the columns which are used in the query, so the total amount of data processed can be significantly less than the table size.
With clustering and partitioningthe amount of data processed can be reduced even further. The Wikimedia dataset contains page views for all of the Wikimedia projects including Wikipedia, Wiktionary, Wikibooks, Wikiquotes, etc.
Notice that, by querying an additional column, wikithe amount of data processed increased from MB to MB. In addition, you can also use regular expressions to query text fields! Let's try one:. You can select a range of tables to form the union using a wildcard table. First, create a second table to query over by loading the next hour's page views into a new table:.
This query will limit to tables corresponding to April Optionally, delete the dataset you created with the bq rm command.
Introduction to datasets
Use the -r flag to remove any tables it contains. You have the power to query petabyte-scale datasets!A dataset is contained within a specific project. Datasets are top-level containers that are used to organize and control access to your tables and views. A table or view must belong to a dataset, so you need to create at least one dataset before loading data into BigQuery. When copying a tablethe datasets containing the source table and destination table must reside in the same location.
As you approach thousands of datasets in a project, classic UI performance begins to degrade, and listing datasets becomes slower.
For more information on dataset quotas and limits, see Quotas and limits. Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4. For details, see the Google Developers Site Policies.
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The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Could I request a feature to allow renaming datasets in BigQuery. I would like to rename the dataset without copying every single table. Thanks for the feature request. There are a couple of reasons why this would be a difficult feature to add. One reason is that it couldn't be done atomically, given our current architecture.
That would mean we'd have to move tables individually in the BigQuery server, which doesn't seem ideal. One thing that we could add relatively easily, is an atomic table move function that moves your table from one dataset to another.
This would save you the copy. Would that be helpful? Currently, you cannot change the name of an existing dataset, and you cannot copy a dataset and give it a new name. If you need to change the dataset name, follow these steps to recreate the dataset:. Learn more. Rename datasets in BigQuery Ask Question. Asked 6 years ago. Active 1 year, 5 months ago. Viewed 3k times. Febian Shah Febian Shah 2 2 gold badges 9 9 silver badges 19 19 bronze badges.
I doubt this page is for feature requests. Active Oldest Votes. Jordan Tigani Jordan Tigani Yes it will help.This document describes how to create and use standard or "native" tables in BigQuery. For information on creating other table types, see:. For more information on managing tables including updating table properties, copying a table, and deleting a table, see Managing tables. As you approach 50, or more tables in a dataset, enumerating them becomes slower.
To improve classic BigQuery web UI performance, you can use the? When you create a table in BigQuery, the table name must be unique per dataset. The table name can:.
Additional permissions such as bigquery. The following predefined Cloud IAM roles include both bigquery. The following predefined Cloud IAM roles include bigquery.
In addition, if a user has bigquery. For more information on specifying a table schema, see Specifying a schema. After the table is created, you can load data into it or populate it by writing query results to it. Go to the BigQuery web UI. In the navigation panel, in the Resources section, expand your project and select a dataset. On the Create table page, in the Source section, select Empty table.
In the Table name field, enter the name of the table you're creating in BigQuery. In the Schema section, enter the schema definition. For Partition and cluster settings leave the default value — No partitioning. In the Advanced options section, for Encryption leave the default value — Google-managed key. By default, BigQuery encrypts customer content stored at rest.
Data definition language DDL statements allow you to create and modify tables and views using standard SQL query syntax. See more on Using Data Definition Language statements. Go to the Cloud Console. The following query creates a table named newtable that expires on January 1, Optional Click More and select Query settings. Optional For Processing locationclick Auto-select and choose your data's location.