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Author: ggeerraarrdd

README.md

@@ -150,6 +150,7 @@ To make the daily tasks of creating a new file and updating the index easier, th
 | 119   | [Product Sales Analysis III](https://leetcode.com/problems/product-sales-analysis-iii/description/)                                                           | [Solution](solutions/119_product_sales_analysis_iii.md)                               | LeetCode    | Medium       |   |
 | 120   | [Classes More Than 5 Students](https://leetcode.com/problems/classes-more-than-5-students/description/)                                                       | [Solution](solutions/120_classes_more_than_5_students.md)                             | LeetCode    | Easy         |   |
 | 121   | [Find Followers Count](https://leetcode.com/problems/find-followers-count/description/)                                                                       | [Solution](solutions/121_find_followers_count.md)                                     | LeetCode    | Easy         |   |
+| 122   | [Biggest Single Number](https://leetcode.com/problems/biggest-single-number/description/)                                                                     | [Solution](solutions/122_biggest_single_number.md)                                    | LeetCode    | Easy         |   |
 
 ## Author(s)
 

solutions/122_biggest_single_number.md

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+# SQL Everyday \#122
+
+## Biggest Single Number
+
+Site: LeetCode\
+Difficulty per Site: Easy
+
+## Problem
+
+A *single number* is a number that appeared only once in the `MyNumbers` table.
+
+Find the largest *single number*. If there is no *single number*, report `null`. [[Full Description](https://leetcode.com/problems/biggest-single-number/description/)]
+
+## Submitted Solution
+
+```sql
+-- Submitted Solution
+SELECT
+    MAX(num) AS num
+FROM (
+    SELECT
+        num
+    FROM MyNumbers
+    GROUP BY num
+    HAVING COUNT(*) = 1
+    ORDER BY num DESC
+    ) AS n
+;
+```
+
+## Site Solution
+
+```sql
+-- LeetCode Solution 
+-- Site solution essentially the same.
+```
+
+## Notes
+
+TODO
+
+Go to [Table of Contents](/README.md#contents)\
+Go to [Overview](/README.md)