State of the Strait: 2025 Edition

[Victor Barua]

Hello all! A lot of good work happened in 2025, and I wanted to take some time to highlight it for everyone.

Community Updates
In terms of community, we added 1 new PMC in 2025

• Yongchul Kwon [Microsoft]

along with 5 new committers:

• Andrew Coleman [IBM]
• Ben Bellick [DataDog]
• Mark Lewis [IBM]
• Niels Pardon [IBM]
• Tornike Gurgenidze

Highlights
The following summaries focus on feat, fix and doc changes in our most popular repositories.

substrait
In the core substrait repository we merged ~44 changes. Highlights include:

• #780: Support for dynamic parameters, which enables encoding parametrized queries into Substrait plans.
  
• #816: YAML Schema for dialects, which are a mechanism to indicate subsets of functionality supported by specific systems.
• #857: Per plan type-aliases, which improves readability and serializability for plans that re-use large composite types.
• #859: URN standardization for extensions, which makes it easier for plans to interoperate between language libraries.
• #889: Lambda support, for use in list functions like transform and filter.

substrait-java
In substrait-java we merged ~104 changes. General highlights include:

• Support for more function mappings between Substrait and Calcite.
• Support for parsing more constructs from SQL to Substrait, including DDL and DML statements.
• Improved overall support for TPC-DS queries.
• Improved overall support for existing Substrait constructs.
• Support for URNs

substrait-python
In substrait-python we merged ~27 changes. General highlights include:

• Builder API for constructing Substrait plans and expression.
• ExtensionRegistry class for working with simple extensions.
• Type inference support for Substrait relations and expressions, along with stricter validations based on types.
• Support for parsing SQL via sqloxide and producing Substrait.
• Support for URNs

substrait-go
In substrait-go we merged ~44 changes. General highlights include:

• Support for more core Substrait constructs in the builder.
• Support for more core Substrait types
• Support for URNs

Towards 2026

That was a brief sampling of what happened in Substrait in 2025. I want to take the opportunity to thank every contributor to the project for their work last year, and I'm looking forward to the progress we'll make in 2026!

[Jacques Nadeau]

Thanks for sending this out. Good to see!

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