Today we will understand the usage of LAG function, which is part of the WINDOW functions in SQL.
1. Syntax for using LAG
2. When to use LAG
3. Applying LAG with default parameters
4. Applying custom parameters
Previous Video on Data Load
https://youtu.be/LuVjzzDBw3g
Data Used
https://finance.yahoo.com/quote/AAPL/history?p=AAPL
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