alamb commented on code in PR #4849:
URL: https://github.com/apache/arrow-datafusion/pull/4849#discussion_r1064171953
##########
datafusion/optimizer/src/push_down_projection.rs:
##########
@@ -374,6 +374,24 @@ fn optimize_plan(
)?;
from_plan(plan, &plan.expressions(), &[child])
}
+ // at a distinct, all columns are required
Review Comment:
👍
##########
datafusion/optimizer/src/push_down_projection.rs:
##########
@@ -1009,6 +1026,25 @@ mod tests {
Ok(())
}
+ #[test]
+ fn pushdown_through_distinct() -> Result<()> {
+ let table_scan = test_table_scan()?;
+
+ let plan = LogicalPlanBuilder::from(table_scan)
+ .project(vec![col("a"), col("b")])?
Review Comment:
👍
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