Top SQL Interview Q&A for Data Scientists
Calculating ratios is one of the most frequently asked SQL questions in data science interviews. In this video, I’ll go over the two most common ways to compute a ratio, and feature two examples to demonstrate solving the problems in real-time: how to calculate the premium subscription rate, and the immediate order from customers’ order data.
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Contents of this video:
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00:00 Introduction
00:38 Ratios
01:10 Calculating Ratios
01:39 Two Methods
02:07 Example: Subscription Rate
05:00 Example: Immediate Order
08:58 Outro
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