alamb commented on code in PR #4293:
URL: https://github.com/apache/arrow-datafusion/pull/4293#discussion_r1030771314
##########
datafusion/optimizer/src/projection_push_down.rs:
##########
@@ -441,32 +368,16 @@ fn optimize_plan(
}))
}
LogicalPlan::SubqueryAlias(SubqueryAlias { input, alias, .. }) => {
- match input.as_ref() {
- LogicalPlan::TableScan(TableScan { table_name, .. }) => {
- let new_required_columns = new_required_columns
- .iter()
- .map(|c| match &c.relation {
- Some(q) if q == alias => Column {
- relation: Some(table_name.clone()),
- name: c.name.clone(),
- },
- _ => c.clone(),
- })
- .collect();
- let new_inputs = vec![optimize_plan(
- _optimizer,
- input,
- &new_required_columns,
- has_projection,
- _optimizer_config,
- )?];
- let expr = vec![];
- from_plan(plan, &expr, &new_inputs)
- }
- _ => Err(DataFusionError::Plan(
- "SubqueryAlias should only wrap TableScan".to_string(),
- )),
- }
+ let new_required_columns =
Review Comment:
this is a nice cleanup 👍
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