raminqaf commented on code in PR #28277:
URL: https://github.com/apache/flink/pull/28277#discussion_r3324173061
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flink-table/flink-table-planner/src/main/java/org/apache/flink/table/planner/operations/converters/MergeTableAsUtil.java:
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@@ -156,7 +156,7 @@ public PlannerQueryOperation maybeRewriteQuery(
() -> "Unsupported node type " +
origQueryNode.getKind());
return (PlannerQueryOperation)
- SqlNodeToOperationConversion.convert(flinkPlanner,
catalogManager, newSelect)
+ SqlNodeToOperationConversion.convert(flinkPlanner,
catalogManager, newSelect, null)
Review Comment:
The conversion path here never calls `toRawString` here. So it is safe. Even
if it gets fired the newSelect is synthesized be rewriteCall, so the slicing
would produce wrong values here. So the correct behavior would be to pass null
to get an `optional#empty`
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