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DuckDB is an analytical in-process SQL database management system

ClickHouse® is a real-time analytics database management system

Apache Doris is a real-time analytics and hybrid search database for AI agents.

The world's fastest open query engine for sub-second analytics both on and off the data lakehouse. With the flexibility to support nearly any scenario, StarRocks provides best-in-class performance for multi-dimensional analytics, real-time analytics, and ad-hoc queries.

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Official repository of Trino, the distributed SQL query engine for big data, formerly known as PrestoSQL (

OceanBase is the unified distributed database for the AI era — open-source, multi-model, one engine for your most demanding workloads.

WARNING] > Experimental > > Project status: Development Preview > > walshadow is under active development and being hardened through real-world > testing and feedback. We recommend validating it thoroughly with your > workloads. Interfaces and behavior may evolve

Druid is a high performance real-time analytics database. Druid's main value add is to reduce time to insight and action.