From 44dc0dd5d8dc639b1caa6d19ef469f9bf4056649 Mon Sep 17 00:00:00 2001
From: Sangeeth Santhosh <73825180+sangeeths29@users.noreply.github.com>
Date: Tue, 3 Jun 2025 22:46:50 -0700
Subject: [PATCH] Add files via upload

---
 01-CustomersWhoBoughtAllProducts.sql  | 8 ++++++++
 02-ProductSalesAnalysis-III.sql       | 9 +++++++++
 2 files changed, 17 insertions(+)
 create mode 100644 01-CustomersWhoBoughtAllProducts.sql 
 create mode 100644 02-ProductSalesAnalysis-III.sql

diff --git a/01-CustomersWhoBoughtAllProducts.sql  b/01-CustomersWhoBoughtAllProducts.sql 
new file mode 100644
index 0000000..ad93b29
--- /dev/null
+++ b/01-CustomersWhoBoughtAllProducts.sql 	
@@ -0,0 +1,8 @@
+-- Mock Interview Question 1 - Customers Who Bought All Products (https://leetcode.com/problems/customers-who-bought-all-products/)
+
+-- Selecting all the customer_id from the Customer Table where we are checking if the number of distinct product keys from both the customer and product table match
+
+SELECT customer_id
+FROM Customer
+GROUP BY customer_id
+HAVING COUNT(DISTINCT product_key) = (SELECT COUNT(product_key) FROM Product);
\ No newline at end of file
diff --git a/02-ProductSalesAnalysis-III.sql b/02-ProductSalesAnalysis-III.sql
new file mode 100644
index 0000000..4277ab2
--- /dev/null
+++ b/02-ProductSalesAnalysis-III.sql
@@ -0,0 +1,9 @@
+-- Mock Interview Question 2 - Product Sales Analysis III (https://leetcode.com/problems/product-sales-analysis-iii/)
+
+-- Writing an inner subquery for filtering minimum year and getting matching quantity and price for that year
+
+SELECT product_id, year AS first_year, quantity, price
+FROM Sales
+WHERE (product_id, year) IN (SELECT product_id, MIN(year) 
+FROM Sales
+GROUP BY product_id);
\ No newline at end of file