mihaibudiu commented on code in PR #4588:
URL: https://github.com/apache/calcite/pull/4588#discussion_r2446242061
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core/src/main/java/org/apache/calcite/sql/validate/SqlValidatorImpl.java:
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@@ -3699,6 +3699,20 @@ private void checkRollUpInUsing(SqlIdentifier identifier,
}
}
+ /** Get the number of scopes referenced by the specified node. */
+ private int getScopeCount(SqlNode node) {
+ SqlValidatorScope scope = scopes.get(node);
+ if (scope == null) {
+ // Not all nodes have an associated scope; count these as "1".
Review Comment:
Not really literal values, these are all nodes that represent relations
(will be converted to Rel nodes).
But while every such node has a namespace attached, not every one of them
introduces a new scope.
I will try to write something, but I have discovered this stuff by much
trial and error.
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