RussellSpitzer commented on code in PR #14593:
URL: https://github.com/apache/iceberg/pull/14593#discussion_r2662638350
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api/src/main/java/org/apache/iceberg/expressions/InclusiveMetricsEvaluator.java:
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@@ -490,6 +506,34 @@ private boolean containsNaNsOnly(Integer id) {
&& nanCounts.get(id).equals(valueCounts.get(id));
}
+ /**
+ * Returns the column's single value if all rows contain the same value,
no nulls, no NaNs, and
+ * lower bound equals upper bound. Returns null otherwise.
+ */
+ private <T> T getUniqueValue(Bound<T> term) {
+ int id = term.ref().fieldId();
+ if (mayContainNull(id)) {
+ return null;
+ }
+
+ T lower = lowerBound(term);
+ T upper = upperBound(term);
+
+ if (lower == null || upper == null || NaNUtil.isNaN(lower) ||
NaNUtil.isNaN(upper)) {
Review Comment:
ORC :( putting Nan in my stats
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