WINDOW functions - Learn SQL with IMDB database
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Unlike a regular aggregate function such as COUNT or AVG, a window function can give you a quick preview into what's in a database without collapsing the result into a single row.
00:00 Introduction to WINDOW functions
00:28 Recap - Regular aggregate function (average)
01:10 Exercies - WINDOW function (average)
02:18 Syntax - A basic WINDOW function (average)
03:45 How to use PARTITION BY in a WINDOW function
04:39 Why are window functions called ""window"" functions?
05:50 Example - How to use COUNT in a WINDOW function
07:05 Example - RANKING function
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