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Posts on tips and tricks, using and learning about SQL for database development and analysis.

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Stop N+1 and slow Queries from Killing Your Laravel Production Performance

Stop N+1 and slow Queries from Killing Your Laravel Production Performance

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1 min read
What is the difference between ETL and ELT?

What is the difference between ETL and ELT?

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7 min read
SQL Concepts and Practical Application

SQL Concepts and Practical Application

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2 min read
Write Your SQL Like a Pro: Mastering Common Table Expressions (CTEs)

Write Your SQL Like a Pro: Mastering Common Table Expressions (CTEs)

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5 min read
SQL CASE Expressions: Write Smarter Queries with Conditional Logic

SQL CASE Expressions: Write Smarter Queries with Conditional Logic

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5 min read
AI-powered PostgreSQL observability

AI-powered PostgreSQL observability

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1 min read
A Beginner's Guide to SQL Joins and Window Functions

A Beginner's Guide to SQL Joins and Window Functions

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6 min read
PostgreSQL Query Optimization: 10 Techniques That Actually Work

PostgreSQL Query Optimization: 10 Techniques That Actually Work

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12 min read
I Thought My Rails Query Was Fine — Until NULL Ate My Data

I Thought My Rails Query Was Fine — Until NULL Ate My Data

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2 min read
Rule Engines

Rule Engines

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3 min read
I Built a Database That Never Forgets — Here's Why

I Built a Database That Never Forgets — Here's Why

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14 min read
Data Engineering Interview Prep (2026): What Actually Matters (SQL, Pipelines, System Design)

Prioritizes clear thinking under pressure

Data Engineering Interview Prep (2026): What Actually Matters (SQL, Pipelines, System Design)

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8 min read
A Evolução do Modelo Relacional para Objeto-Relacional

A Evolução do Modelo Relacional para Objeto-Relacional

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4 min read
Optimizing Complex Sequelize Queries: Search, Sorting & Pagination Done Right

Optimizing Complex Sequelize Queries: Search, Sorting & Pagination Done Right

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2 min read
SQL Aggregate Functions: Stop Guessing, Start Calculating

SQL Aggregate Functions: Stop Guessing, Start Calculating

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6 min read
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