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Others have posted some really good resources. I paticularly like Periscope Data's blog ( ex : https://www.periscopedata.com/blog/effective-revenue-chart.html h
by ing33k 10y ago
Others have posted some really good resources.
I paticularly like Periscope Data's blog ( ex : https://www.periscopedata.com/blog/effective-revenue-chart.html https://www.periscopedata.com/blog/effective-revenue-chart.h... ) , they have covered a wide range of topics.
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I would also encourage you to learn a bit of Relational Algera if you really want to improve your mental model.
- curun1r 10y ago> learn a bit of Relational Algera [sic] This. SQL is just a tool for expressing your thinking and learning it doesn't help you to problem solve. The theory, both relational algebra and set theory, will teach you how to think about the problems, not how to express your thinking. That's what's necessary to solve difficult SQL problems.