Data Science SQL Mock Interview - Analyze Marketing Channels

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Preparing for a data science interview that involves SQL? Join us for this mock interview where we will explore, "Which marketing channel has the most high-value customers?" Sharpen your SQL skills and prepare for your next data science interview.
This video demonstrates using SQL to identify the most effective marketing channels for an e-commerce site by analyzing data from attribution and user sessions tables. It covers techniques for calculating average purchase value, link click-to-purchase rates, customer lifetime value, and targeting high-value users.
0:00 Determine the most effective marketing channels
1:24 Find the average purchase value by channel
3:48 Reviewing query results
6:15 Find the customer lifetime value
9:20 Filtering for highest value users
12:10 Finding the first user interaction
14:19 Inner join high-value on f.user_id
16:30 Reviewing query results
16:45 Calculate % of customers by channel
18:54 Reviewing query results
19:34 Debrief and conclusion
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[@streambumper250]

Holy cow. If you assign this to me as a task I can probably finish it in a day with some googling, trial and error, etc But doing this right away during an interview? I would have freaked out completely. This guy just nailed it, and the tips are super helpful. Thanks for sharing!

[@chinedu99]

Ben is built different, no hesitation, its like he had done this before, what a beast

[@shreyansbadjatya8906]

Shouldn't the average_purchase_value consider only those sessions where a purchase was made? (rows with purchase_value > 0). The conversion rate of each marketing_channel is creating a bias in this metric.

[@Ral88234]

This is very helpful. Thank you for sharing

[@its_me7363]

Very helpful...Please do more of Data Engineering Mock Interview and sessions related to DE.

[@kaboyodaniel3630]

Nice session. Very helpful.

[@tracyzhang7076]

Hey, for this episode interview question doc, Could you share? (add a link here)

[@mattmatt245]

Why is the data in two separate tables ? It looks like a one to one relationship to me.

[@braddavis8232]

Ben is a g