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Fix exists? semantics for query combinations - #4790

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josevalim merged 1 commit into
elixir-ecto:masterfrom
lukaszsamson:ls-exists-fix
Sep 6, 2026
Merged

Fix exists? semantics for query combinations#4790
josevalim merged 1 commit into
elixir-ecto:masterfrom
lukaszsamson:ls-exists-fix

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This PR addresses invalid query involving set membership rewrite to SELECT 1 by preserving the query form and wrapping it in subquery

Fixes #4789

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josevalim merged commit 97437d5 into elixir-ecto:master Sep 6, 2026
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Repo.exists? changes the membership semantics of EXCEPT and INTERSECT

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