add 1308

Author: fishercoder1534

README.md

@@ -882,6 +882,7 @@ _If you like this project, please leave me a star._ ★
 |1341|[Movie Rating](https://leetcode.com/problems/movie-rating/)|[Solution](../master/database/_1341.sql) || Medium |
 |1327|[List the Products Ordered in a Period](https://leetcode.com/problems/list-the-products-ordered-in-a-period/)|[Solution](../master/database/_1327.sql) || Easy |
 |1322|[Ads Performance](https://leetcode.com/problems/ads-performance/)|[Solution](../master/database/_1322.sql) || Easy |
+|1308|[Running Total for Different Genders](https://leetcode.com/problems/running-total-for-different-genders/)|[Solution](../master/database/_1308.sql) || Medium |
 |1294|[Weather Type in Each Country](https://leetcode.com/problems/weather-type-in-each-country/)|[Solution](../master/database/_1294.sql) | | Easy |
 |1280|[Students and Examinations](https://leetcode.com/problems/students-and-examinations/)|[Solution](../master/database/_1280.sql) | [:tv:](https://www.youtube.com/watch?v=ThbkV4Fs7iE)| Easy |
 |1251|[Average Selling Price](https://leetcode.com/problems/average-selling-price/)|[Solution](../master/database/_1251.sql) | | Easy |

database/_1308.sql

@@ -0,0 +1,69 @@
+--1308. Running Total for Different Genders
+--
+--Table: Scores
+--
+--+---------------+---------+
+--| Column Name   | Type    |
+--+---------------+---------+
+--| player_name   | varchar |
+--| gender        | varchar |
+--| day           | date    |
+--| score_points  | int     |
+--+---------------+---------+
+--(gender, day) is the primary key for this table.
+--A competition is held between females team and males team.
+--Each row of this table indicates that a player_name and with gender has scored score_point in someday.
+--Gender is 'F' if the player is in females team and 'M' if the player is in males team.
+--
+--
+--Write an SQL query to find the total score for each gender at each day.
+--
+--Order the result table by gender and day
+--
+--The query result format is in the following example:
+--
+--Scores table:
+--+-------------+--------+------------+--------------+
+--| player_name | gender | day        | score_points |
+--+-------------+--------+------------+--------------+
+--| Aron        | F      | 2020-01-01 | 17           |
+--| Alice       | F      | 2020-01-07 | 23           |
+--| Bajrang     | M      | 2020-01-07 | 7            |
+--| Khali       | M      | 2019-12-25 | 11           |
+--| Slaman      | M      | 2019-12-30 | 13           |
+--| Joe         | M      | 2019-12-31 | 3            |
+--| Jose        | M      | 2019-12-18 | 2            |
+--| Priya       | F      | 2019-12-31 | 23           |
+--| Priyanka    | F      | 2019-12-30 | 17           |
+--+-------------+--------+------------+--------------+
+--Result table:
+--+--------+------------+-------+
+--| gender | day        | total |
+--+--------+------------+-------+
+--| F      | 2019-12-30 | 17    |
+--| F      | 2019-12-31 | 40    |
+--| F      | 2020-01-01 | 57    |
+--| F      | 2020-01-07 | 80    |
+--| M      | 2019-12-18 | 2     |
+--| M      | 2019-12-25 | 13    |
+--| M      | 2019-12-30 | 26    |
+--| M      | 2019-12-31 | 29    |
+--| M      | 2020-01-07 | 36    |
+--+--------+------------+-------+
+--For females team:
+--First day is 2019-12-30, Priyanka scored 17 points and the total score for the team is 17.
+--Second day is 2019-12-31, Priya scored 23 points and the total score for the team is 40.
+--Third day is 2020-01-01, Aron scored 17 points and the total score for the team is 57.
+--Fourth day is 2020-01-07, Alice scored 23 points and the total score for the team is 80.
+--For males team:
+--First day is 2019-12-18, Jose scored 2 points and the total score for the team is 2.
+--Second day is 2019-12-25, Khali scored 11 points and the total score for the team is 13.
+--Third day is 2019-12-30, Slaman scored 13 points and the total score for the team is 26.
+--Fourth day is 2019-12-31, Joe scored 3 points and the total score for the team is 29.
+--Fifth day is 2020-01-07, Bajrang scored 7 points and the total score for the team is 36.
+
+--# Write your MySQL query statement below
+select s1.gender, s1.day, sum(s2.score_points) as total from Scores s1, Scores s2
+where s1.gender = s2.gender and s1.day >= s2.day
+group by s1.gender, s1.day
+order by s1.gender, s1.day