jackwener commented on code in PR #4185:
URL: https://github.com/apache/arrow-datafusion/pull/4185#discussion_r1023477191
##########
datafusion/sql/src/planner.rs:
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@@ -2955,30 +2807,6 @@ fn extract_join_keys(
}
}
-/// Extract join keys from a WHERE clause
-fn extract_possible_join_keys(
- expr: &Expr,
- accum: &mut Vec<(Column, Column)>,
-) -> Result<()> {
- match expr {
- Expr::BinaryExpr(BinaryExpr { left, op, right }) => match op {
- Operator::Eq => match (left.as_ref(), right.as_ref()) {
- (Expr::Column(l), Expr::Column(r)) => {
- accum.push((l.clone(), r.clone()));
- Ok(())
- }
- _ => Ok(()),
- },
- Operator::And => {
- extract_possible_join_keys(left, accum)?;
- extract_possible_join_keys(right, accum)
- }
- _ => Ok(()),
- },
- _ => Ok(()),
- }
Review Comment:
I don't know who revert these code, this originally include handle OR.
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