Welcome to this project-based course Introduction to SQL Window Functions. This is a hands-on project that introduces SQL users to the world of window functions. In this project, you will learn how to explore and query the project-db database extensively. We will start this hands-on project by retrieving the data in the table in the database.
By the end of this 2-hour-and-a-half-long project, you will be able to use different window functions to retrieve the desired result from a database. In this project, you will learn how to use SQL window functions like ROW_NUMBER(), LEAD(), LAG(), and FIRST_VALUE() to manipulate data in the project-db database. These window functions will be used together with the OVER() clause to query this database.
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Very educative
First of all, I understood thigs I wanted to, before taking this course, so one star.
This course has horrible explanation. Teacher's english was very hard to listen for me. Subtitles were necessery. Also repeating things as "beautiful" and "You are amazing" was not helpful -I felt forced to think about this course in particular way. Material shoud stands on it's own.
The guided project file was not prepared with care. Numeration is wrong throgh the whole file. Teacher orders(while querying database) things redundantly while not mentioning it. Not using a fact that ASC order is default in SQL(intermidiete level course). That's very disappointing especially for a paid thing.