Re: [PR] Partially implement MATCH_RECOGNIZE for Advanced Pattern Matching [datafusion]

["geoffreyclaude (via GitHub)" <gi...@apache.org>]

geoffreyclaude commented on code in PR #16685:
URL: https://github.com/apache/datafusion/pull/16685#discussion_r2319487949


##########
datafusion/sql/src/relation/mod.rs:
##########
@@ -281,3 +796,49 @@ fn optimize_subquery_sort(plan: LogicalPlan) -> Result<Transformed<LogicalPlan>>
     });
     new_plan
 }
+
+/// Helper: determine optional filter predicate based on ROWS PER MATCH
+fn rows_filter(rpm: &Option<RowsPerMatch>) -> Option<Expr> {
+    match rpm {
+        // ONE ROW PER MATCH (default): keep last match row only

Review Comment:
   done



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