Google BigQuery is a fully managed, cloud-based big data analytics web service for processing very large read-only data sets. BigQuery was designed for analyzing data on the order of billions of rows, using a SQL-like syntax.

For more information, check out Google’s Google BigQuery overview.

This guide serves as a reference for version 1 of Stitch’s Google BigQuery destination.


Details and features

Stitch features

High-level details about Stitch’s implementation of Google BigQuery, such as supported connection methods, availability on Stitch plans, etc.

Release status

Deprecated

Stitch plan availability

All Stitch plans

Stitch supported regions
  • North America (AWS us-east-1)

Operating regions determine the location of the resources Stitch uses to process your data. Learn more.

Supported versions

Not applicable

Connect API availability Unsupported

This version of the Google BigQuery destination is not currently available in Stitch’s Connect API.

SSH connections Unsupported

Stitch does not support using SSH tunnels to connect to Google BigQuery destinations.

SSL connections Supported

Stitch will attempt to use SSL to connect by default. No additional configuration is needed.

VPN connections Unsupported

Virtual Private Network (VPN) connections may be implemented as part of an Unlimited Plus plan. Contact Stitch Sales for more info.

Default loading behavior

Append-Only
Note: Existing rows will not be updated in the destination. Learn more.

Nested structure support

Supported
Nested data structures will be maintained. Learn more.

Destination details

Details about the destination, including object names, table and column limits, reserved keywords, etc.

Note: Exceeding the limits noted below will result in loading errors or rejected data.

Maximum record size

20MB

Table name length

1,024 characters

Column name length

128 characters

Maximum columns per table

10,000

Maximum table size

None

Maximum tables per database

None

Case sensitivity

Insensitive

Reserved keywords

Refer to the Reserved keywords documentation.

Supported Google Cloud Storage regions

When you set up a Google BigQuery destination, you’ll select a Google Storage location. This determines the location of the internal Google Storage bucket Stitch uses during the replication process.

Stitch supports the following Google Cloud Storage regions for version 1 of the Google BigQuery destination:

Region description Region name
Americas United States US
Europe European Union EU
London europe-west2
Asia Pacific Singapore asia-southeast1
Sydney australia-southeast1
Tokyo asia-northeast1

Google BigQuery pricing

Unlike many other cloud-based data warehouse solutions, Google BigQuery’s pricing model is based on usage and not a fixed-rate. This means that your bill can vary over time.

Before fully committing yourself to using Google BigQuery as your data warehouse, we recommend familiarizing yourself with the Google BigQuery pricing model and how using Stitch may impact your costs.

Learn more about Stitch & Google BigQuery pricing


Replication

Loading behavior

Stitch will use Append-Only replication when loading data into this version of the Google BigQuery destination.

In Append-Only replication, existing rows aren’t updated. Multiple versions of a row can exist in a table, creating a log of how a row changed over time. Note: While this may look like a discrepancy, it is intended functionality for Google BigQuery v1 destinations.

Because of this loading strategy, querying may require a different strategy than usual. Using some of the system columns Stitch inserts into tables will enable you to locate the latest version of a record at query time.

Refer to the Understanding loading behavior guide for more info and examples.

Primary Keys

Google BigQuery destinations don’t have native support for Primary Keys. While Primary Key columns will be present in destination tables, no constraints will be applied to the columns.

Incompatible sources

No compatibility issues have been discovered between Google BigQuery and Stitch's integration offerings.

See all destination and integration incompatibilities.


Transformations

System tables and columns

Stitch will create the following tables in each integration’s dataset:

Additionally, Stitch will insert system columns (prepended with _sdc) into each table.

Data typing

Stitch converts data types only where needed to ensure the data is accepted by Google BigQuery. In the table below are the data types Stitch supports for Google BigQuery destinations, and the Stitch types they map to.

  • Stitch type: The Stitch data type the source type was mapped to. During the Extraction and Preparing phases, Stitch identifies the data type in the source and then maps it to a common Stitch data type.
  • Destination type: The destination-compatible data type the Stitch type maps to. This is the data type Stitch will use to store data in Google BigQuery.
  • Notes: Details about the data type and/or its allowed values in the destination, if available. If a range is available, values that exceed the noted range will be rejected by Google BigQuery.
Stitch type Destination type Notes
ARRAY ARRAY
  • Description: Items in the array must all be of the same data type, or Google BigQuery will reject the data.

BIGINT INTEGER
  • Range : -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807

BOOLEAN BOOLEAN
DATE TIMESTAMP
  • Description: Stored in UTC

  • Range : 0001-01-01 00:00:00 to 9999-12-31 23:59:59.999999 UTC

DOUBLE FLOAT
FLOAT FLOAT
INTEGER INTEGER
  • Range : -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807

NUMBER NUMERIC
  • Description: Up to 38 digits of precision and 9 digits of scale

  • Range : -99999999999999999999999999999.999999999 to 99999999999999999999999999999.999999999

RECORD RECORD
STRING STRING
  • Description: No maximum width

JSON structures

Google BigQuery supports nested records within tables, whether it’s a single record or repeated values. This means that when nested data structures are loaded into Google BigQuery, they will be maintained.

Column names

Column names in Google BigQuery:

Stitch will perform the following transformations to ensure column names adhere to the rules imposed by Google BigQuery:

Transformation Source column Destination column
Convert uppercase and mixed case to lowercase CUSTOMERID or cUsTomErId customerid
Convert spaces to underscores customer id customer_id
Convert special characters to underscores customer#id or !customerid customer_id and _customerid
Convert leading numbers to underscores 4customerid _customerid

Timezones

Google BigQuery will store the value in UTC as TIMESTAMP.

More info about timestamp data types can be found in BigQuery’s documentation.


Compare destinations

Not sure if Google BigQuery is the data warehouse for you? Check out the Choosing a Stitch Destination guide to compare each of Stitch’s destination offerings.


Questions? Feedback?

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