Watch tutorials and explanations by expert teachers that walk through solving this problem.
CrioDo
Azurelib Academy
Frederik Müller
virtbi projects
Everyday Data Science
Code with Carter
Tech Timeout
Solve more problems to master this pattern
![LeetCode 1741: Find Total Time Spent by Each Employee [SQL]](https://i.ytimg.com/vi/ikUAQJfrK3A/hq720.jpg?sqp=-oaymwEXCNAFEJQDSFryq4qpAwkIARUAAIhCGAE=&rs=AOn4CLDJYCrbDiLW3QVz_uTLS8M4_VpFlA)
![LeetCode 1069: Product Sales Analysis II [SQL]](https://i.ytimg.com/vi/Bq2PgGub4l8/hq720.jpg?sqp=-oaymwEXCNAFEJQDSFryq4qpAwkIARUAAIhCGAE=&rs=AOn4CLCkXeWN7xbToVLSo6zo919jCkOulw)
![LeetCode 1384 - Total Sales Amount By Year | LeetCode SQL Solution [HARD]](https://i.ytimg.com/vi/TBufPom-KS8/hq720.jpg?sqp=-oaymwEXCNAFEJQDSFryq4qpAwkIARUAAIhCGAE=&rs=AOn4CLDukUDrtCxaRw-KfqaxURpxWaaWVQ)
