suibianwanwank commented on code in PR #4109:
URL: https://github.com/apache/calcite/pull/4109#discussion_r1897077340
##########
core/src/main/java/org/apache/calcite/rel/metadata/RelMdColumnOrigins.java:
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@@ -303,6 +328,17 @@ private static Set<RelColumnOrigin>
getMultipleColumns(RexNode rexNode, RelNode
}
return null;
}
+
+ @Override public Void visitFieldAccess(RexFieldAccess fieldAccess) {
Review Comment:
I'm not sure I fully understand what you mean. There is a case where the
RelNode that calls getColumnOrigin is not the top-level RelNode, so it may not
get the original table.
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