Apache Calcite
Reviews
Star rating
Rank in Relational Databases
Pros and cons
Pros
Cons
Traffic & LLM citations
Source: G2 review data
Key stats
Adoption by company size
| Segment | Share of reviews |
|---|---|
| Small Business | 15.4% |
| Mid-Market | 38.5% |
| Enterprise | 46.2% |
Quarterly history
| Quarter | Reviews | Star rating |
|---|---|---|
| 2026 Q2 | 2 | 4.8 |
Satisfaction ratings
What reviewers say
Powerful, Flexible Query Optimization with Seamless Data Integration
“It allows seamless integration with different data sources and supports advanced SQL parsing, planning, and optimization. Overall, it provides powerful and flexible query optimization.”
Flexible and Reliable SQL Query Optimization Framework
“I like that Apache Calcite makes query planning and optimization easier without forcing a specific storage system. It is flexible, works with many data sources, and gives developers control to build custom SQL engines while still keeping performance and scalability in mind.”
"Apache Calcite: An Open Source Framework for Building Databases and Data Management Systems"
“Calcite provides a high-performance SQL parser that can translate SQL statements into a query plan, which can then be optimised for efficient execution. It supports multiple data sources and query languages, making it easy to integrate with existing systems and data sources.”