What resources should I use to master SQL queries asked in Data Engineer interviews? I have been practicing SQL queries only on Leetcode.
Spin up your own db. Download data from kaggle or something. Play around with data and practice sql
https://mode.com/sql-tutorial/ Mode SQL Tutorial - Mode Analytics
Leetcode SQL section Books: SQL cook book Data book: https://goo.gl/search/Designing+Data-Intensive+Applications:+The+Big+Ideas+Behind+Reliable,+Scalable,+and+Maintainable+Systems Designing Data-Intensive Applications: The Big Ideas Behind Reliable, Scalable, and Maintainable Systems, Book by Martin Kleppmann
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Work on real data?
Can you elaborate?
What I mean is that you need to really work on project with real data, and to gain experience