|1495|[Friendly Movies Streamed Last Month](https://leetcode.com/problems/friendly-movies-streamed-last-month/)|[Solution](../master/database/_1495.sql)|| Easy|

|1435|[Create a Session Bar Chart](https://leetcode.com/problems/create-a-session-bar-chart/)|[Solution](../master/database/_1435.sql)|| Easy|

|1484|[Group Sold Products By The Date](https://leetcode.com/problems/group-sold-products-by-the-date/)|[Solution](../master/database/_1484.sql)|| Easy|

|1445|[Apples & Oranges](https://leetcode.com/problems/apples-oranges/)|[Solution](../master/database/_1445.sql)|| Medium|

|1407|[Top Travellers](https://leetcode.com/problems/top-travellers/)|[Solution](../master/database/_1407.sql)|| Easy|

|1384|[Total Sales Amount by Year](https://leetcode.com/problems/total-sales-amount-by-year/)|[Solution](../master/database/_1384.sql)|| Hard|

|1378|[Replace Employee ID With The Unique Identifier](https://leetcode.com/problems/replace-employee-id-with-the-unique-identifier/)|[Solution](../master/database/_1378.sql)|| Easy|

select sale_dateas SALE_DATE, (o.sold_num-a.sold_num)as DIFFfrom Sales ajoin Sales o using(sale_date)group by sale_dateorder by sale_date