devinjdangelo commented on code in PR #9606:
URL: https://github.com/apache/arrow-datafusion/pull/9606#discussion_r1524895969
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datafusion/sql/src/unparser/plan.rs:
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@@ -176,7 +250,9 @@ impl Unparser<'_> {
)
}
LogicalPlan::Aggregate(_agg) => {
Review Comment:
I'm currently assuming all aggregate plan nodes are preceded by a projection
plan node. These two nodes are then handled together simultaneously in the
above projection node block.
@alamb I was wondering if you know:
1. If an Aggregate plan node can ever NOT be preceded by a projection plan
node?
2. If so, under what circumstances and what does that mean intuitively?
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