Solutions to SQL Alternative Queries section

Author: sknsht

SQL/Alternative Queries/Print Prime Numbers/Solution.sql

@@ -0,0 +1,13 @@
+WITH THOUSAND AS
+  (SELECT *
+   FROM
+     (SELECT LEVEL LVL
+      FROM DUAL CONNECT BY LEVEL <= 1000)
+   WHERE LVL > 1)
+SELECT LISTAGG(T1.LVL, '&') WITHIN GROUP(ORDER BY T1.LVL)
+FROM THOUSAND T1
+WHERE T1.LVL <=
+    (SELECT COUNT(DISTINCT T2.LVL) + 2
+     FROM THOUSAND T2
+     WHERE T2.LVL < T1.LVL
+       AND MOD(T1.LVL, T2.LVL) > 0);