Hi, I really enjoy the course “An Introductory guide to SQL”. I would say it is the best SQL course I have ever seen. Thank you a lot for your hard work.
I am quite lost in the section of Primary Key and Indexes, could you please explain them again step by step how the data (here the table will be stored and how to index for both cases clustered and non-clustered). I tried to read and look at the graphs but still could not understand how it works. Thank you a lot!
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