[ADD] CTE

Author: stivenramireza

classes/29-cte.sql

@@ -0,0 +1,16 @@
+WITH posts_week_2024 AS (
+	SELECT 
+		DATE_TRUNC('week', p.created_at) AS weeks, 
+		COUNT(DISTINCT(p.post_id)) AS number_of_posts,
+		SUM(c.counter) AS total_claps,
+		COUNT(*) AS number_of_claps
+	FROM posts AS p
+	INNER JOIN claps AS c ON c.post_id = p.post_id
+	GROUP BY weeks
+	ORDER BY weeks DESC
+)
+
+SELECT *
+FROM posts_week_2024
+WHERE weeks BETWEEN '2024-01-01' AND '2024-12-31'
+AND total_claps >= 600;