[DOCS] Document limitations of UNNEST#6598
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Signed-off-by: Mihai Budiu <mbudiu@feldera.com>
mihaibudiu
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July 6, 2026 23:28
mythical-fred
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Doc addition reads well and the workaround is genuinely useful. Two small nits, all non-blocking:
unsupported-operations.mdline 76: stray comma —and \OUTER APPLY (...)` are not yet supported:` (no comma before "are").- The
array.mdworkaround only covers theNULLcase; empty arrays still drop rows underCROSS JOIN UNNEST. One extra sentence noting that would spare users a follow-up "why doesn't this work for[]?". Not required.
The compiler change (throw UnimplementedException when JoinType != INNER in visitCorrelate) is what makes the doc claim true, and the paired issue2736b test locks it in — nice. Title says [DOCS] though; a reader scanning git log for compiler behavior changes would miss this. Worth a [SQL] or dual tag next time.
APPROVE.
anandbraman
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Thanks for the clarifications and compiler errors/warnings
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Describe Manual Test Plan
Document the fact that we do not support
LEFT JOIN UNNEST, the semantics is different.We will add support in the future.
The documentation suggests a workaround.
Checklist