[ADD] Recursive CTE

Author: stivenramireza

classes/31-recursive-cte.sql

@@ -0,0 +1,16 @@
+-- Name of the table in memory
+-- Fields of the table
+WITH RECURSIVE countdown(val) AS (
+	-- Initialization => First level o initial values
+	-- VALUES(5)
+	SELECT 5 AS val
+	UNION
+	-- Recursive query
+	SELECT val - 1 
+	FROM countdown 
+	WHERE val > 1
+)
+
+-- Select of the fields
+SELECT *
+FROM countdown;