Connect Snowflake to BigQuery: Two Easy Methods –

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If you’ve been struggling to find a way to seamlessly connect Snowflake and BigQuery, then this article is a great resource for you. You already know that in today’s data-driven world, integrating your data sources is essential for making informed decisions, and this article is here to help you with that.

As you might already know, Snowflake is a powerful cloud-based data warehouse, and BigQuery is a fully-managed, serverless data warehouse from Google Cloud. Both platforms are widely used for data analysis, and connecting them can unlock new insights and opportunities for your business. But how do you bridge the gap between these two platforms?

That’s where this article comes in. It discusses two easy and efficient methods for connecting Snowflake and BigQuery. Each method has its unique advantages and use cases, so the article covers them in detail to help you decide which one is right for you. 

After reading this article, you’ll be equipped with the knowledge to choose the best method for your needs and to set up a smooth data integration process. You’ll also learn some tips and best practices to ensure that your data remains consistent and secure during the migration process.

Method 1: Snowflake Connector for BigQuery

What Is the Snowflake connector for BigQuery?

One of the easiest ways to connect Snowflake to BigQuery is by using the Snowflake connector for BigQuery. This connector allows you to transfer data directly from your Snowflake instance to your BigQuery project; it ensures a fast and secure data migration.

Advantages of Using the Snowflake Connector

The Snowflake connector for BigQuery offers several advantages, including:

  1. Simplicity: The connector is designed to be user-friendly–to be easy to set up and configure even if you’re not a technical expert.
  2. Speed: The direct connection between Snowflake and BigQuery ensures a speedy data transfer, as it minimizes the time it takes to migrate your data.
  3. Security: Data is transferred securely over a private connection, so you don’t have to worry about data breaches during the migration process.

Step-By-Step Guide on How To Set up the Snowflake Connector for BigQuery

Now that you know the benefits of the Snowflake connector for BigQuery, let’s walk through the process of setting it up:

  1. Ensure that you have the necessary permissions to access both your Snowflake and BigQuery accounts.
  2. Install the Snowflake connector for BigQuery in your environment by following the instructions provided by Snowflake.
  3. Configure the connector by providing the required credentials and settings for your Snowflake and BigQuery instances.
  4. Run the connector to initiate the data transfer between Snowflake and BigQuery.
  5. Monitor the progress and troubleshoot any issues that may arise during the migration process.

Method 2: Third-Party ETL Tools

Understanding the ETL (Extract, Transform, Load) Process

ETL stands for Extract, Transform, and Load, which are the three key steps involved in migrating data between different platforms and optimizing DataOps processes. In the context of connecting Snowflake to BigQuery, the ETL process involves extracting data from Snowflake, transforming it to meet the requirements of BigQuery, and then loading it into BigQuery.

Popular ETL Tools for Snowflake and BigQuery Data Transfer

There are several ETL tools available in the market that can help you move data from Snowflake to BigQuery. Some popular options include:

1. Apache NiFi

Apache NiFi is an open-source ETL tool that provides a highly configurable and extensible platform for data integration. With its graphical user interface and data flow management capabilities, NiFi offers a high level of flexibility and ease of use. Its error-handling mechanisms and adaptability to various data sources make it a reliable choice for Snowflake to BigQuery integration. NiFi can scale horizontally as data grows, and its support for continuous data synchronization ensures that your data is always up-to-date.

2. Talend

Talend is a popular ETL tool that delivers a wide range of data integration and transformation capabilities. It provides a user-friendly interface and pre-built components for connecting Snowflake and BigQuery, and it’s easy to use. Talend has robust error-handling features and can scale to accommodate large volumes of data. The platform supports continuous data synchronization, and its adaptability allows it to work seamlessly with various data sources and destinations.

3. Stitch

Stitch is a cloud-based ETL platform focused on simplicity and ease of use. With its pre-built integrations for Snowflake and BigQuery, setting up a data pipeline is quick and straightforward. Stitch offers automatic error handling, thereby ensuring data consistency during the migration process. While it can scale to handle growing data volumes, it may not be as flexible or adaptable as some other ETL tools. Nevertheless, Stitch supports continuous data synchronization, which keeps your data up-to-date in real-time.

4. Fivetran

Fivetran is a fully managed data integration platform that automates the process of extracting, transforming, and loading data from Snowflake to BigQuery. Its ease of use and zero-maintenance approach make it a popular choice for businesses. Fivetran offers built-in error handling and scales automatically as your data grows. The platform is highly adaptable and supports continuous data synchronization, which ensures your data is always current.

5. Estuary Flow

Estuary Flow is a versatile data integration tool that connects various data sources, including Snowflake and BigQuery. Its user-friendly interface makes it easy for you to set up and manage data integration tasks, even with no technical skills. Estuary Flow is designed to handle large-scale data migrations and offer robust error-handling capabilities. The platform is highly adaptable, as it supports multiple data sources and destinations, and it provides continuous data synchronization for real-time data updates.

These tools simplify the ETL process and offer various features, such as data transformation, error handling, and scheduling, to make data migration more efficient. The best choice for your Snowflake to BigQuery integration depends on your specific requirements, budget, and technical expertise.

How To Set up an ETL Process for Snowflake to BigQuery Data Pipeline

The following is a general outline of the steps to set up an ETL process using any of the popular ETL tools mentioned above:

  1. Choose an ETL tool that fits your requirements and budget.
  2. Ensure that you have the necessary permissions to access both your Snowflake and BigQuery accounts.
  3. Install (where necessary) and configure the ETL tool following the provider’s instructions.
  4. Define the data extraction, transformation, and loading steps in the ETL tool.
  5. Schedule the ETL process (if it isn’t already automatic) to run at a suitable time to ensure minimal impact on your production environment.
  6. Monitor the progress of the data transfer and troubleshoot any issues that may arise during the migration process.

Comparing the Two Methods

When deciding which method to use for connecting Snowflake to BigQuery, it’s essential to consider the following factors:

  1. Technical expertise: Some methods might require more technical knowledge than others. So you need to choose a method that aligns with the skills of your team.
  2. Budget: The cost of implementing and maintaining each method can vary. Therefore, consider your budget when selecting the most suitable option.
  3. Complexity of the data migration: Depending on the size and complexity of your data, some methods might be better suited to handle the migration process.
  4. Security requirements: Ensure that the method you choose aligns with your organization’s security policies and requirements.

Pros and Cons of Each Method

1. Snowflake connector for BigQuery:


  • Easy to set up and configure.
  • Fast and secure data transfer.
  • Direct connection between Snowflake and BigQuery.


  • Limited to just Snowflake and BigQuery integration.

2. Third-party ETL tools:


  • Offers advanced features such as data transformation, error handling, and scheduling.
  • Works with a wide range of platforms.
  • Can be customized to fit your unique data migration requirements.  


  • May require more technical expertise to set up and manage.

Tips and Best Practices for Connecting Snowflake to BigQuery

How To Optimize Snowflake-BigQuery Data Transfer

To ensure a smooth and efficient data migration process, follow these tips:

  1. Perform a thorough analysis of your data before starting the migration process. This will help you identify potential issues and optimize your data transfer.
  2. You are advised to schedule data migration during off-peak hours to minimize the impact on your production environment.
  3. Optimize the data transfer by using parallel processing and batching to speed up the migration process.

How To Ensure Data Consistency and Integrity During Migration

To maintain data consistency and integrity during the migration process, keep these best practices in mind:

  1. Verify your data mappings and transformation rules before initiating the data transfer to avoid data corruption or loss.
  2. Implement error-handling mechanisms to address any issues that may arise during the migration process.
  3. Monitor the progress of the data transfer and perform data validation checks to ensure that your data has been imported correctly into BigQuery.

How to Monitor and Troubleshoot Common Issues

Regular monitoring of the data migration process is essential for identifying and addressing any issues that may arise. Some common issues to look out for include:

  1. Data transfer failures due to incorrect credentials or settings.
  2. Incomplete or corrupted data caused by incorrect mappings or transformation rules.
  3. Performance bottlenecks that slow down the data transfer process.

When you address these issues promptly, you can minimize the adverse impact on your data integration process and ensure a seamless migration experience.


Connecting Snowflake to BigQuery doesn’t have to be a daunting task using any of the two methods discussed in this article–Snowflake Connector for BigQuery and third-party ETL tools. As for third-party ETL tools, you have a variety of options to choose from based on your unique requirements, budget, and technical expertise.

Each method has its pros and cons, and this article enables you to evaluate them carefully before making a decision. Surely, by following the tips and best practices outlined so far, you can ensure a smooth and efficient data integration process that allows you to unlock valuable insights from your data.

So, now that you’re equipped with the knowledge to connect Snowflake and BigQuery, it’s time to put it into practice and start reaping the benefits of a seamless data integration experience. Don’t forget that you are welcome to share your thoughts on the methods in the comment section.

Opinions expressed by MaximusDevs contributors are their own.

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