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ECTO PATCHES INSERT_ALL TYPE MISMATCH EDGE CASE
By RepoJournal ยท Filed ยท About Elixir & Phoenix
Ecto fixed a placeholder type validation bug in insert_all that was silently accepting malformed tuples.
The Ecto team shipped a fix [1] for issue #4742 that corrects tuple shape matching in the insert_all placeholder type mismatch check. The bug allowed certain type mismatches to slip through validation when the tuple structure didn't align with expected patterns. This is a surgical fix that tightens the validation logic without changing the public API. If you're using insert_all with dynamic placeholders, this prevents a class of subtle data corruption bugs that could have propagated to your database. The fix is already merged and ready for the next Ecto release.
Action items
- โ Watch for next Ecto release and update if you use insert_all with placeholders elixir-ecto/ecto [plan]
References
- [1] Match on correct tuple shape in insert_all placeholder type mismatch check โ elixir-ecto/ecto
FAQ
- What changed in Elixir & Phoenix on July 5, 2026?
- Ecto fixed a placeholder type validation bug in insert_all that was silently accepting malformed tuples.
- What should Elixir & Phoenix teams do about it?
- Watch for next Ecto release and update if you use insert_all with placeholders
- Which Elixir & Phoenix repositories shipped on July 5, 2026?
- elixir-ecto/ecto