ClickHouse vs Snowflake
Considering a switch from Snowflake to a European alternative? ClickHouse offers full GDPR compliance and EU-only data hosting without the legal uncertainties that come with US-based services. Here's how they compare on features, pricing, and data protection.
Quick Overview
ClickHouse
EU- Headquarters
- Amsterdam, NL
- Pricing
- Free
- Open Source
- Yes
Snowflake
USSnowflake is a cloud-based data warehousing platform that provides scalable data storage, processing, and analytics with support for structured and semi-structured data.
The Case for ClickHouse
- ClickHouse stores all data exclusively in EU, US, under European jurisdiction. Unlike Snowflake, which is subject to the US CLOUD Act and FISA Section 702, ClickHouse cannot be compelled by foreign governments to hand over your data.
- ClickHouse offers a Data Processing Agreement (DPA) that is fully aligned with GDPR Article 28. There is no legal ambiguity about data transfers or adequacy decisions — your data processor is European, and the law that governs it is European.
- As an open-source solution, ClickHouse gives you full code transparency. You can verify that the software does what it claims, audit it for security vulnerabilities, and even self-host it for maximum control — something that is simply not possible with Snowflake.
- You can try ClickHouse for free before committing. This makes it easy to evaluate whether it meets your needs alongside — or as a replacement for — Snowflake, without any financial risk.
Why Switch to ClickHouse?
Concerns with Snowflake
- US CLOUD Act jurisdiction
- Data warehouse containing sensitive business data on US infrastructure
- Query data and results accessible to US authorities
- Cross-cloud data sharing may route through US-controlled systems
ClickHouse Compliance
GDPRSOC 2DPA
- Headquarters
- Amsterdam, NL
- Data Centers
- EU, US
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ClickHouse vs Snowflake — FAQ
Is Snowflake GDPR compliant?
Snowflake may offer GDPR compliance features and EU data residency options, but as a US-headquartered company, it remains subject to the US CLOUD Act and FISA Section 702. These laws can compel US companies to hand over data regardless of where it is stored. The EU-US Data Privacy Framework provides some safeguards, but its predecessors (Safe Harbor and Privacy Shield) were both invalidated by the European Court of Justice. ClickHouse, as a European company, is not subject to these US laws at all.
How does ClickHouse compare to Snowflake in features?
ClickHouse offers Column-oriented OLAP, Real-time analytics, SQL interface, High compression, and 5 more features. While Snowflake's ecosystem may be larger due to its market position, ClickHouse covers the core functionality that most teams need. The trade-off is typically between breadth of integrations (Snowflake) and data sovereignty with regulatory certainty (ClickHouse).
Can I migrate from Snowflake to ClickHouse?
Yes. Most European software providers, including ClickHouse, offer migration tools or documentation to help you transition from US-based services. Under GDPR Article 20, you have the right to data portability — meaning Snowflake must provide your data in a machine-readable format. The migration process varies in complexity depending on your data volume and integrations, but for most teams it can be completed within a few days to a few weeks.