Can Sigma Combine Data from Multiple Connections (SQL Server + Snowflake) in a Single Dashboard/Visualization?

Can confirm! That said, it is possible to connect SQL Server to Snowflake, so you can get all data onto one connection for Sigma — might be worth considering / requesting from your data team. See resources below: Coefficient – 6 Dec 24 Connecting Snowflake to SQL Server: A Comprehensive Guide for 2025 Learn three effective ways to connect Snowflake to SQL Server, including step-by-step guides for no-code solutions, native integration, and open-source tools.