korlov42 commented on a change in pull request #9581:
URL: https://github.com/apache/ignite/pull/9581#discussion_r761803412



##########
File path: 
modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/prepare/PlannerHelper.java
##########
@@ -147,7 +147,10 @@ public static IgniteRel optimize(SqlNode sqlNode, 
IgnitePlanner planner, IgniteL
             if (rel.isDelete())
                 return rel;
 
-            processNode(rel);
+            if (rel.isMerge()) // MERGE operator always contains modified 
table as a source.

Review comment:
       Yes, looks like you are right. The only way is to extend the 
LogicalModifyNode, but I don't sure it worth the deal.




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