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Practice SQL Window Functions | Xorthax's Trading Post

Tables Used

inventory

Column	Type
inventoryid	bigint
productid	bigint
quantityavailable	bigint
location	text
lastrestocked	text

products

Column	Type
productid	bigint
name	text
description	text
category	text
price	double precision
supplierid	bigint
stockquantity	bigint

Expected Output

Column
category
productid
totalstock
stocktier

36. Stock Level Stratification

Assign products to 4 tiers based on their current inventory levels.

Xorthax needs to group products into 4 tiers based on their current stock levels currently available at his trading post. Write a query to assign stock tiers for each product category.

Write Your Query

This problem is labeled as Intermediate. You don’t need to be an expert—just comfortable with SQL and willing to experiment. If you get stuck, the hints and solution will guide you step by step.

Yes. Every problem comes with optional hints you can reveal one at a time, plus a fully worked step-by-step solution. You decide how much help you want while practicing.

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