Github user jihoonson commented on a diff in the pull request:
https://github.com/apache/tajo/pull/839#discussion_r44932832
--- Diff:
tajo-core/src/main/java/org/apache/tajo/engine/planner/global/GlobalPlanner.java
---
@@ -1322,14 +1317,16 @@ public LogicalNode
visitTableSubQuery(GlobalPlanContext context, LogicalPlan pla
if (eachNode.getPID() == leftMostSubQueryNode.getPID()) {
continue;
}
- Target[] eachNodeTargets = eachNode.getTargets();
- if (eachNodeTargets.length != targetMappings.length) {
+ List<Target> eachNodeTargets = eachNode.getTargets();
+ if (eachNodeTargets.size() != targetMappings.length) {
throw new TajoInternalError("Union query can't have
different number of target columns.");
}
- for (int i = 0; i < eachNodeTargets.length; i++) {
+ for (int i = 0; i < eachNodeTargets.size(); i++) {
Column inColumn =
eachNode.getInSchema().getColumn(targetMappings[i]);
-
eachNodeTargets[i].setAlias(eachNodeTargets[i].getNamedColumn().getQualifiedName());
- EvalNode evalNode = eachNodeTargets[i].getEvalTree();
+ Target t = eachNodeTargets.get(i);
+ t.setAlias(t.getNamedColumn().getQualifiedName());
+ eachNodeTargets.set(i, t);
--- End diff --
This line seems to be unnecessary.
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