should be it

external/duckdb/test/sql/topn/test_top_n.test

@@ -0,0 +1,58 @@
+# name: test/sql/topn/test_top_n.test
+# description: Test Top N Optimization
+# group: [topn]
+
+statement ok
+PRAGMA enable_verification
+
+statement ok
+CREATE TABLE test (b INTEGER);
+
+statement ok
+INSERT INTO test VALUES (22), (2), (7);
+
+# Top N optimization
+query I
+SELECT b FROM test ORDER BY b DESC LIMIT 2;
+----
+22
+7
+
+# Top N optimization: works with OFFSET
+query I
+SELECT b FROM test ORDER BY b LIMIT 1 OFFSET 1;
+----
+7
+
+# Top N optimization: Limit greater than number of rows
+query I
+SELECT b FROM test ORDER BY b LIMIT 10
+----
+2
+7
+22
+
+query I
+SELECT b FROM test ORDER BY b DESC LIMIT 10
+----
+22
+7
+2
+
+# Top N optimization: Limit greater than number of rows
+query I
+SELECT b FROM test ORDER BY b LIMIT 10 OFFSET 1;
+----
+7
+22
+
+# Top N optimization: Offset greater than total number of rows
+query I
+SELECT b FROM test ORDER BY b LIMIT 10 OFFSET 10;
+----
+
+# Top N optimization: doesn't apply for Offset without Limit
+query I
+SELECT b FROM test ORDER BY b OFFSET 10;
+----
+