The fundamentals - things like data cleaning, data visualization, and basic statistics - are the building blocks of all data analytics work. Master these, and you'll have a solid foundation to build on.
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Your strength isn't knowing everything. It's being okay with not knowing, but always being ready to learn.
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SQL tip for data problem-solvers: Window functions are your friends. They allow you to perform calculations across a set of rows that are somehow related to the current row. Great for comparing, ranking, and aggregating. A powerful tool in your problem-solving toolkit.
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