Migrate from SQL Server to ClickHouse with guaranteed performance gains.
Yes, this is a well-understood project. Here's how we do it: we model custom columnar structures and batch-loading brokers to maximize ClickHouse query speeds while ensuring reliable data ingestion.
The lowest-cost way off Microsoft SQL Server: our migration tooling automates the repetitive work —you pay senior engineers for judgment, not keystrokes.
How we support Microsoft SQL Server → ClickHouse after migration
- ✓Senior platform engineers lead your migration – fixed scope
- ✓Custom columnar models drive analytical query speeds 10–100x
- ✓Batch-loading brokers ensure consistent, reliable data ingestion
- ✓40-70% savings on legacy SQL Server support during the move
- ✓24/7 US-based support for your new ClickHouse cluster
BI reports failing or timing out
Under high SQL Server load, interactive dashboards become unusable. ClickHouse's columnar engine processes aggregate queries in milliseconds.
Excessive licensing costs
Scaling analytical replicas on SQL Server is expensive. You pay per core. ClickHouse runs on commodity hardware with no per-core licensing.
Demand for instant analytical processing
Users expect sub-second responses on billions of rows. SQL Server row-store struggles; ClickHouse columnar storage delivers instant interactivity.
Microsoft SQL Server → ClickHouse migration — your questions answered
My application relies on row-by-row updates. Can ClickHouse handle that?+
ClickHouse is optimized for bulk inserts and analytical queries, not single-row OLTP. We model your workload to batch incoming row-level changes and transform them into columnar-friendly inserts. Most row-by-row patterns adapt smoothly.
We have large multi-table JOINs in SQL Server. How will that migrate?+
Joins are handled differently in ClickHouse for maximum performance. Our engineers restructure your schema into a denormalized or pre-joined model where possible, and optimize JOIN execution with ClickHouse's engine-specific techniques.
We rely on Windows Authentication and active domain integration. Is that supported?+
Windows Authentication is tied to SQL Server. For ClickHouse we set up LDAP/Active Directory authentication or token-based access. User and permission mapping is part of the migration scope.
What if my SQL Server vendor contract lapses before the migration completes?+
While your vendor contract is active, you keep full vendor support. If it lapses, our third-party support covers most operational issues on SQL Server so you can finish the move. Note: this is not vendor support and does not include vendor patches.
Get your ClickHouse proof-of-concept schema and performance audit.
Let our senior engineers build a custom schema for your workload, benchmark query performance against your SQL Server, and give you a clear migration plan. Click below to start your PoC.