layout: page title: Community
Upcoming talks
None scheduled.
Project Members
| Name (Apache ID) | Github | Org | Role |
|---|
| {% for c in site.data.contributors %}{% unless c.emeritus %}{% if c.homepage %}{{ c.name }}{% else %}{{ c.name }}{% endif %} ({{ c.apacheId }}) {{ c.pronouns }} | | {{ c.org }} | {{ c.role }} |
| {% endunless %}{% endfor %} | | | |
Emeritus members
| Name (Apache ID) | Github | Org | Role |
|---|
| {% for c in site.data.contributors %}{% if c.emeritus %}{% if c.homepage %}{{ c.name }}{% else %}{{ c.name }}{% endif %} ({{ c.apacheId }}) {{ c.pronouns }} | | {{ c.org }} | {{ c.role }} |
| {% endif %}{% endfor %} | | | |
Mailing Lists
There are several mailing lists for Calcite:
You can subscribe to the lists by sending email to {list}-subscribe@calcite.apache.org and unsubscribe by sending email to {list}-unsubscribe@calcite.apache.org (where {list} is either “dev”, “issues”, or “commits”).
Help
Need help with Calcite? Try these resources:
- Mailing Lists. The best option is to send email to the developers list dev@calcite.apache.org. All of the historic traffic is available in the archive. To subscribe to the user list, please send email to dev-subscribe@calcite.apache.org.
- Bug Reports. Please file any issues you encounter or fixes you'd like on the Calcite Jira. We welcome patches and pull-requests!
- StackOverflow. StackOverflow is a wonderful resource for any developer. Take a look over there to see if someone has answered your question.
- Browse the code. One of the advantages of open source software is that you can browse the code. The code is available on GitHub.
Talks
Want to learn more about Calcite?
Watch some presentations and read through some slide decks about Calcite, or attend one of the upcoming talks.
Adding measures to Calcite SQL
At Calcite Virtual Meetup, March 2023; [slides], [video].
Building a streaming incremental view maintenance engine with Calcite
At Calcite Virtual Meetup, March 2023; [slides], [video].
Debugging planning issues using Calcite's built in loggers
At Calcite Virtual Meetup, March 2023; [summary], [slides], [pdf], [video].
calcite-clj - Use Calcite with Clojure
At Calcite Virtual Meetup, January 2022; [slides], [video], [code].
Morel, a functional query language (Julian Hyde)
At Strange Loop 2021, St. Louis, Missouri, September 30, 2021; [slides].
Building modern SQL query optimizers with Apache Calcite
At ApacheCon 2021, September 22, 2021.
Apache Calcite Tutorial
At BOSS 2021, Copenhagen, Denmark, August 16, 2021; [summary], [slides], [pdf], [video].
An introduction to query processing & Apache Calcite
At Calcite Virtual Meetup, January 20, 2021; [summary], [slides], [video].
Calcite streaming for event-time semantics
At Calcite Virtual Meetup, January 20, 2021; [video].
Efficient spatial queries on vanilla databases
At Calcite Virtual Meetup, January 20, 2021; [video].
Apache Calcite integration in Hazelcast In-Memory Data Grid
At Calcite Virtual Meetup, January 20, 2021; [video].
Fast federated SQL with Apache Calcite
At ApacheCon Europe 2019, Berlin, Germany, October 24, 2019; [summary], [video].
One SQL to Rule Them All - an Efficient and Syntactically Idiomatic Approach to Management of Streams and Tables
At SIGMOD/PODS 2019, Amsterdam, Netherlands, 2019 and Beam Summit Europe 2019; [paper], [review], [pdf], [video].
Apache Calcite: A Foundational Framework for Optimized Query Processing Over Heterogeneous Data Sources
At SIGMOD/PODS 2018, Houston, TX, 2018; [paper], [slides], [pdf].
Spatial query on vanilla databases
At ApacheCon North America, 2018; [slides], [pdf.
Apache Calcite: One planner fits all
Voted Best Lightning Talk at XLDB-2015; [video], [slides].
Streaming SQL
At Hadoop Summit, San Jose, CA, 2016 [video], [slides], [pdf].
Cost-based Query Optimization in Apache Phoenix using Apache Calcite
At Hadoop Summit, San Jose, CA, 2016 [video], [slides], [pdf].
Planning with Polyalgebra: Bringing together relational, complex and machine learning algebra
As Hadoop Summit, Dublin, 2016 [video], [slides].
More talks
- Why you care about relational algebra (even though you didn't know it) (Washington DC, 2015)
- Cost-based optimization in Hive 0.14 (Seattle, 2014)
- Discardable, in-memory materialized query for Hadoop (video) (Hadoop Summit, 2014)
- SQL Now! (NoSQL Now! conference, 2013)
- Drill / SQL / Optiq (2013)
- How to integrate Splunk with any data solution (Splunk User Conference, 2012)
External resources
A collection of articles, blogs, presentations, and interesting projects related to Apache Calcite.
If you have something interesting to share with the community drop us an email on the dev list or consider creating a pull request on GitHub. If you just finished a cool project using Calcite consider writing a short article about it for our [news section]({{ site.baseurl }}/news/index.html).
- Calcite notes about runnable examples and concise documents (Jiajun Xie, 2024)
- Calcite program representations (Mihai Budiu, October 2023)
- Building a new Calcite frontend (GraphQL) (Gavin Ray, 2022)
- Write Calcite adapters in Clojure (Ioan Eugen Stan, 2022)
- Cross-Product Suppression in Join Order Planning (Vladimir Ozerov, 2021)
- Metadata Management in Apache Calcite (Roman Kondakov, 2021)
- Relational Operators in Apache Calcite (Vladimir Ozerov, 2021)
- Introduction to the Join Ordering Problem (Alexey Goncharuk, 2021)
- What is Cost-based Optimization? (Alexey Goncharuk, 2021)
- Memoization in Cost-based Optimizers (Vladimir Ozerov, 2021)
- Rule-based Query Optimization (Vladimir Ozerov, 2021)
- Custom traits in Apache Calcite (Vladimir Ozerov, 2020)
- Assembling a query optimizer with Apache Calcite (Vladimir Ozerov, 2020)
- A series of Jupyter notebooks to demonstrate the functionality of Apache Calcite (Michael Mior)
- A curated collection of resources about databases