Upload 173

Author: ggeerraarrdd

README.md

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 [![eevveerryyddaayy release](https://img.shields.io/badge/eevveerryyddaayy-v1.3.0-blue.svg)](https://github.com/ggeerraarrdd/eevveerryyddaayy/)
-[![Solved](https://img.shields.io/badge/solved-172-green.svg)](#index)
+[![Solved](https://img.shields.io/badge/solved-173-green.svg)](#index)
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 # SQL Everyday
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 | 170   | [Game Play Analysis II](https://leetcode.com/problems/game-play-analysis-ii/description/)                                                                         | [Solution](solutions/170_game_play_analysis_ii.md)                                      | LeetCode    | Easy         |                                                                     |
 | 171   | [Total Traveled Distance](https://leetcode.com/problems/total-traveled-distance/description/)                                                                     | [Solution](solutions/171_total_traveled_distance.md)                                    | LeetCode    | Easy         |                                                                     |
 | 172   | [Create a Session Bar Chart](https://leetcode.com/problems/create-a-session-bar-chart/description/)                                                               | [Solution](solutions/172_create_a_session_bar_chart.md)                                 | LeetCode    | Easy         | Histogram bins w/ `UNION`, `CASE`                                   |
+| 173   | [Customers Who Bought Products A and B but Not C](https://leetcode.com/problems/customers-who-bought-products-a-and-b-but-not-c/description/)                     | [Solution](solutions/173_customers_who_bought_products_a_and_b_but_not_c.md)            | LeetCode    | Medium       | `STRING_AGG`                                                        |
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solutions/173_customers_who_bought_products_a_and_b_but_not_c.md

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+# SQL Everyday \#173
+
+## Customers Who Bought Products A and B but Not C
+
+Site: LeetCode\
+Difficulty per Site: Medium
+
+## Problem
+
+Write a solution to report the customer_id and customer_name of customers who bought products *"A"*, *"B"* but did not buy the product *"C"* since we want to recommend them to purchase this product.
+
+Return the result table *ordered* by `customer_id`. [[Full Description](https://leetcode.com/problems/customers-who-bought-products-a-and-b-but-not-c/description/)]
+
+## Submitted Solution
+
+```sql
+-- Submitted Solution
+WITH cte AS (
+    SELECT
+        customer_id
+        ,STRING_AGG(product_name, ',') AS products
+    FROM Orders
+    GROUP BY customer_id
+)
+SELECT
+    c.customer_id
+    ,c.customer_name
+FROM Customers AS c
+LEFT JOIN cte ON c.customer_id = cte.customer_id
+WHERE (cte.products LIKE '%A%' 
+    AND cte.products LIKE '%B%'
+    AND cte.products NOT LIKE '%C%')
+ORDER BY c.customer_id
+;
+```
+
+## Site Solution
+
+```sql
+-- LeetCode Solution 
+SELECT c.customer_id, customer_name
+FROM customers c
+LEFT JOIN orders o ON c.customer_id = o.customer_id
+GROUP BY c.customer_id
+HAVING SUM(product_name='A') > 0
+    AND SUM(product_name='B') > 0
+    AND SUM(product_name='C') = 0
+ORDER BY c.customer_id;
+```
+
+## Notes
+
+TBD
+
+## NB
+
+`STRING_AGG`
+
+Go to [Index](../?tab=readme-ov-file#index)\
+Go to [Overview](../?tab=readme-ov-file)