should be it

external/duckdb/extension/tpch/dbgen/queries/q21.sql

@@ -0,0 +1,38 @@
+SELECT
+    s_name,
+    count(*) AS numwait
+FROM
+    supplier,
+    lineitem l1,
+    orders,
+    nation
+WHERE
+    s_suppkey = l1.l_suppkey
+    AND o_orderkey = l1.l_orderkey
+    AND o_orderstatus = 'F'
+    AND l1.l_receiptdate > l1.l_commitdate
+    AND EXISTS (
+        SELECT
+            *
+        FROM
+            lineitem l2
+        WHERE
+            l2.l_orderkey = l1.l_orderkey
+            AND l2.l_suppkey <> l1.l_suppkey)
+    AND NOT EXISTS (
+        SELECT
+            *
+        FROM
+            lineitem l3
+        WHERE
+            l3.l_orderkey = l1.l_orderkey
+            AND l3.l_suppkey <> l1.l_suppkey
+            AND l3.l_receiptdate > l3.l_commitdate)
+    AND s_nationkey = n_nationkey
+    AND n_name = 'SAUDI ARABIA'
+GROUP BY
+    s_name
+ORDER BY
+    numwait DESC,
+    s_name
+LIMIT 100;