From 306a4b95723d4304900d5700c98b50a8dcd18919 Mon Sep 17 00:00:00 2001
From: Parth Modi <modiparth527@gmail.com>
Date: Sat, 11 Jan 2025 09:06:38 +0100
Subject: [PATCH] mock sql 3

---
 mock_sql.sql | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 mock_sql.sql

diff --git a/mock_sql.sql b/mock_sql.sql
new file mode 100644
index 0000000..c7cfd0c
--- /dev/null
+++ b/mock_sql.sql
@@ -0,0 +1,20 @@
+WITH CTE AS(
+SELECT o.seller_id,
+      o.item_id,
+      i.item_brand,
+      DENSE_RANK() OVER( PARTITION BY o.seller_id ORDER BY o.order_date) AS rnk
+      FROM Orders o
+      JOIN
+      Items i
+      ON o.item_id = i.item_id
+)
+SELECT u.user_id as 'seller_id',
+    CASE
+        WHEN c.item_brand = u.favorite_brand THEN 'yes'
+        ELSE 'no'
+    END as 2nd_item_fav_brand
+    FROM Users as u
+    LEFT JOIN
+    CTE as c
+    ON c.seller_id = u.user_id AND c.rnk = 2;
+-- SELECT * FROM CTE;
\ No newline at end of file