Github user jihoonson commented on a diff in the pull request:
https://github.com/apache/tajo/pull/545#discussion_r29146884
--- Diff: tajo-plan/src/main/java/org/apache/tajo/plan/LogicalPlanner.java
---
@@ -1200,8 +1200,8 @@ private static EvalNode
getNaturalJoinCondition(JoinNode joinNode) {
Column rightJoinKey;
for (Column common : commons.getColumns()) {
- leftJoinKey = leftSchema.getColumn(common.getQualifiedName());
- rightJoinKey = rightSchema.getColumn(common.getQualifiedName());
+ leftJoinKey =
leftSchema.getColumn(leftSchema.getColumnIdByName(common.getQualifiedName()));
--- End diff --
Would you explain why you changed this line?
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