imply-cheddar commented on code in PR #13902:
URL: https://github.com/apache/druid/pull/13902#discussion_r1130342495
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sql/src/main/java/org/apache/druid/sql/calcite/rel/Windowing.java:
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@@ -396,4 +431,68 @@ public int getConstantInt(int argPosition)
return ((Number) getConstantArgument(argPosition).getValue()).intValue();
}
}
+
+ /**
+ * Return a list of {@link ColumnWithDirection} corresponding to a {@link
RelCollation}.
+ *
+ * @param collation collation
+ * @param sourceRowSignature signature of the collated rows
+ */
+ private static LinkedHashSet<ColumnWithDirection>
computeSortColumnsFromRelCollation(
+ final RelCollation collation,
+ final RowSignature sourceRowSignature
+ )
+ {
+ final LinkedHashSet<ColumnWithDirection> retVal = new LinkedHashSet<>();
+
+ for (RelFieldCollation fieldCollation : collation.getFieldCollations()) {
+ ColumnWithDirection.Direction direction;
Review Comment:
Nit: I think you can make this final.
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