108. Databricks | Pyspark| Window Function: First and Last

Azure Databricks Learning: Pyspark Development: Window Function: First and Last
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Both First and Last are Pyspark Window functions used to idetify first and last value of a column for each window of a dataset.
To get more understanding of the functionalities of these 2 transformation, watch this video
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[@passions9730]

Came here from LinkedIn, nice information video..will go thru ur series of databricks..thank you..

[@rajasdataengineering7585]

Thanks and welcome! Hope this channel will help you with new learning. If you like the content, please share in your LinkedIn so that it can be beneficial to other data engineers in your circle too.

[@AshokKumar-ji3cs]

I really appreciate your efforts as the way how you explaine is very nice any one can easily understand. I suggest you to do more videos like this.

[@rajasdataengineering7585]

Thank you, I will try my best and make more videos.

[@venkatasai4293]

Great explanation Raja . I had a doubt here we are not considering order by so by default window frame is unbounded preceding and unbounded following . But if we specify order by in window spec then it becomes unbounded preceding and current row .if that is the case last will not return correct value so we need to change window frame like current row and unbounded following . Is this correct ?

[@rajasdataengineering7585]

Thanks Venkat! Yes that's correct, we can use unbounded preceding and unbounded following