alamb commented on code in PR #4411:
URL: https://github.com/apache/arrow-datafusion/pull/4411#discussion_r1036386540
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datafusion/optimizer/src/limit_push_down.rs:
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@@ -192,6 +196,24 @@ impl OptimizerRule for LimitPushDown {
LogicalPlan::Join(join) => {
let limit = fetch + skip;
let new_join = match join.join_type {
+ JoinType::Left | JoinType::Right | JoinType::Full
+ if is_no_join_condition(join) =>
Review Comment:
I wonder how often there will be no join conditions 🤔 that effectively then
becomes a CROSS JOIN
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