SQL Interview Question | Can You Solve This Inventory Stockout Problem?

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A raw transaction log doesn’t immediately tell you which product ran out of stock first - not without the right SQL technique. In this video, I solve a real business scenario live on SQLNest: reconstructing running inventory balances from a transaction log and finding the exact moment a product first went out of stock.

Timestamps
00:00 Intro
00:44 Understand the Problem Statement
08:47 Step 1 - Find the running balance
15:47 Step 2 - Finding the Stockout dates
19:49 Step 3 - Finding the First stock in date
22:05 Step 4 - Merging everything together
28:06 Outro

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