mihaibudiu commented on code in PR #2811:
URL: https://github.com/apache/calcite/pull/2811#discussion_r1772400473


##########
core/src/main/java/org/apache/calcite/sql2rel/SqlToRelConverter.java:
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@@ -1958,7 +1959,33 @@ private RelOptUtil.Exists convertExists(
       if (!values.getTuples().isEmpty()) {
         unionInputs.add(values);
       }
-      resultRel = LogicalUnion.create(unionInputs, true);
+      RelDataType finalRowType = rowType;

Review Comment:
   The way to find out is to write another test query, where the query in the 
IN right-hand-side returns a result with a type that will also require a cast.



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