Blog: Row-Level DML in DataFusion #136

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ethan-tyler wants to merge 1 commit into apache:main from ethan-tyler:site/ethan-urbanski/2026-01-row-level-dml

ethan-tyler commented Jan 11, 2026

Summary

This post describes the new DELETE and UPDATE hooks added to the TableProvider trait in DataFusion, scheduled for the 52.0.0 release.

The post covers:

The new delete_from and update API contract
What this means for SQL users and embedders
How DML flows through the planner
Implementation guidance for custom TableProvider authors
Key correctness details (SQL three-valued logic for NULL handling)
MemTable as a reference implementation

Related PR: apache/datafusion#19142


          Blog: Row-Level DML in DataFusion

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