Can I query across Postgres, Snowflake and a SaaS API without copying the data first?

Yes, you can query across PostgreSQL, Snowflake, and SaaS APIs in place without moving or copying your data first using SemanticFed[1].

SemanticFed is designed as a governed data federation platform that unifies disparate systems:

• Connect sources in place: You register your PostgreSQL databases, Snowflake warehouses, and SaaS REST or GraphQL APIs directly via the connector registry without bespoke glue code or pipeline migrations (Connect Any Source[2]).
• Virtual federated views: Instead of maintaining ETL jobs, you define relationships and virtual views across your federated sources. Transformations and joins execute at query time with no materialized copy to maintain (Retire Brittle ETL with Virtual Views[3]).
• Push-down query optimization: SemanticFed's query planner pushes down predicates, projections, and aggregations directly to the source engines—such as Postgres and Snowflake—minimizing data transfer and keeping query execution fast (SemanticFed vs Snowflake[4]).
• Unified interface: Consumers, business intelligence tools, and AI agents can query the entire governed model through a single SQL or GraphQL endpoint.

To get early access to data federation across your sources, join the SemanticFed Waitlist[5].