Azure Databricks Learning: Coding Interview Exercise: Pyspark and Spark SQL
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Coding exercises are very common in most Big Data interviews. It is important to develop coding skills before appearing for Spark/Databricks interviews.

In this video, I have explained a coding scenario to find the customers who bought all the products available. This is also one of the common coding exercises asked in MAANG/FAANG/GAMAM companies such as Google, Apple, Microsoft, Amazon, Meta, etc.

Consider the following tables:

Products Table:



+-----------+
|product_key|
+-----------+
| 5|
| 6|
+-----------+

Customers Table:

+-----------+-----------+
|customer_id|product_key|
+-----------+-----------+
| 1| 5|
| 2| 6|
| 3| 5|
| 3| 6|
| 1| 6|
+-----------+-----------+

Output:

+-------------+
| Customer_Id |
+-------------+
| 1 |
| 3 |
+-------------+

In this example, customer 1 and 3 bought all the products (5 and 6), so they are included in the output. Watch the video to understand the approach and solution for this coding problem, which can be very useful in your Big Data interviews."


To get more understanding, watch this video

   • 127. Databricks | Pyspark| SQL Coding Inte...…

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