bert-beyondloops commented on issue #16623:
URL: https://github.com/apache/datafusion/issues/16623#issuecomment-3019062655
Experimenting with a potential fix by treating the unnest logical plan the
same as a limit plan seems to solve this issue? :
optimize_projections/mod.rs :
` LogicalPlan::Limit(_) |
LogicalPlan::Unnest(_) => {
// Pass index requirements from the parent as well as column
indices
// that appear in this plan's expressions to its child. These
operators
// do not benefit from "small" inputs, so the
projection_beneficial
// flag is `false`.
plan.inputs()
.into_iter()
.map(|input| indices.clone().with_plan_exprs(&plan,
input.schema()))
.collect::<Result<_>>()?
}`
Fix: Just passing down the requirements together with the required unnest
exec columns towards the input child
but I leave it up to the community/experts to tackle possible issues with
some corner cases?
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