should be it

external/duckdb/benchmark/ldbc/queries/interactive-complex-9.sql

@@ -0,0 +1,18 @@
+select p_personid, p_firstname, p_lastname,
+       m_messageid, COALESCE(m_ps_imagefile,'')||COALESCE(m_content,'') AS content, m_creationdate
+from
+  ( select k_person2id
+    from knows
+    where
+    k_person1id = 21990232556256
+    union
+    select k2.k_person2id
+    from knows k1, knows k2
+    where
+    k1.k_person1id = 21990232556256 and k1.k_person2id = k2.k_person1id and k2.k_person2id <> 21990232556256
+  ) f, person, message
+where
+  p_personid = m_creatorid and p_personid = f.k_person2id and
+  m_creationdate < '2012-07-26T22:00:00'
+order by m_creationdate desc, m_messageid asc
+limit 20