[YOUR PERSONAL STORY PLACEHOLDER]
Add your specific experience with Database queries that killed production. What went wrong? What was the impact? Be specific and vulnerable.
The Problem
Database queries that killed production
The Hidden Truth No One Talks About
My SELECT * FROM orders crashed production by pulling 50GB into memory.
How The Giants Use (and Abuse) This
Tech Giants' Reality:
• GitHub's 2012 outage - missing WHERE clause updated all users
• GitLab's 2017 disaster - wrong database deleted, 300GB lost
• Reddit's 2020 crash - unindexed query brought down entire site
• GitHub's 2012 outage - missing WHERE clause updated all users
• GitLab's 2017 disaster - wrong database deleted, 300GB lost
• Reddit's 2020 crash - unindexed query brought down entire site
The Disaster That Made Headlines
Major bank's $10M fine - SQL injection exposed 76M households' data
💰 The Real Cost:
$196M - Equifax breach started with basic SQL injection
$196M - Equifax breach started with basic SQL injection
The Code That Actually Matters
# Real implementation goes here
The Revelation:
Every query without an index is a time bomb
Every query without an index is a time bomb
What I Didn't Understand
Query optimization, indexes, joins, transactionsIndustrial Applications
# Industrial example code
# [CODE PLACEHOLDER - Add specific industrial examples]
Exercise: Hands-On Practice
SQL for Industrial Data
Write efficient queries for sensor databases
-- Get hourly averages
-- Find anomalies
-- Join sensor and maintenance data
Key Takeaways
What I Learned:
Query optimization, indexes, joins, transactions
Query optimization, indexes, joins, transactions
[YOUR LEARNING MOMENT PLACEHOLDER]
How did you finally understand this concept? What made it click?