Upload 159

Author: ggeerraarrdd

README.md

@@ -187,6 +187,7 @@ Because this project necessitated a framework to enable consistent daily practic
 | 156   | [Top Travellers](https://leetcode.com/problems/top-travellers/description/)                                                                                       | [Solution](solutions/156_top_travellers.md)                                             | LeetCode    | Easy         |                                                                     |
 | 157   | [Rearrange Products Table](https://leetcode.com/problems/rearrange-products-table/description/)                                                                   | [Solution](solutions/157_rearrange_products_table.md)                                   | LeetCode    | Easy         |                                                                     |
 | 158   | [Calculate Special Bonus](https://leetcode.com/problems/calculate-special-bonus/description/)                                                                     | [Solution](solutions/158_calculate_special_bonus.md)                                    | LeetCode    | Easy         |                                                                     |
+| 159   | [The Latest Login in 2020](https://leetcode.com/problems/the-latest-login-in-2020/description/)                                                                   | [Solution](solutions/159_the_latest_login_in_2020.md)                                   | LeetCode    | Easy         |                                                                     |
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solutions/159_the_latest_login_in_2020.md

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+# SQL Everyday \#159
+
+## The Latest Login in 2020
+
+Site: LeetCode\
+Difficulty per Site: Easy
+
+## Problem
+
+Write a solution to report the *latest* login for all users in the year `2020`. Do *not* include the users who did not login in `2020`.
+
+Return the result table *in any order*. [[Full Description](https://leetcode.com/problems/the-latest-login-in-2020/description/)]
+
+## Submitted Solution
+
+```sql
+-- Submitted Solution
+SELECT
+    user_id
+    ,MAX(time_stamp) AS last_stamp
+FROM Logins
+WHERE time_stamp BETWEEN '2020-01-01 00:00:00' AND '2020-12-31 23:59:59'
+GROUP BY user_id
+;
+```
+
+## Site Solution
+
+```sql
+-- LeetCode Solution 
+-- Solution 1: Using YEAR() to extract year from the date column and MAX() to find the latest record
+SELECT 
+    user_id, 
+    MAX(time_stamp) AS last_stamp
+FROM 
+    Logins
+WHERE 
+    YEAR(time_stamp) = 2020
+GROUP BY 1;
+
+-- Solution 2: Using EXTRACT() to get year from the date column and FIRST_VALUE() to find the latest record
+SELECT
+    DISTINCT user_id,
+    FIRST_VALUE(time_stamp)OVER(PARTITION BY user_id ORDER BY time_stamp DESC) AS last_stamp
+FROM
+    Logins
+WHERE EXTRACT(Year FROM time_stamp) = 2020;
+```
+
+## Notes
+
+TBD
+
+## NB
+
+TBD
+
+Go to [Index](../?tab=readme-ov-file#index)\
+Go to [Overview](../?tab=readme-ov-file)