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

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Why WHERE phone = NULL Returns Nothing in SQL

Why WHERE phone = NULL Returns Nothing in SQL

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4 min read
Data Analyst Interview Questions 2026: SQL, Business Cases, and Behavioral (What Actually Gets You Hired)

Data Analyst Interview Questions 2026: SQL, Business Cases, and Behavioral (What Actually Gets You Hired)

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4 min read
Do you need foreign keys and surrogate keys because you broke your relationships ?

Do you need foreign keys and surrogate keys because you broke your relationships ?

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9 min read
The SQL Playground That Understands Your Questions Before You Ask Them

The SQL Playground That Understands Your Questions Before You Ask Them

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3 min read
🚀 Gudu SQL Omni Lineage Analysis — Directly Inside VS Code

🚀 Gudu SQL Omni Lineage Analysis — Directly Inside VS Code

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3 min read
📘SQL JOINs Explained Simply - A Beginner's Guide

📘SQL JOINs Explained Simply - A Beginner's Guide

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4 min read
B-Trees, Clustered Indexes, and the OLAP Revolution (Part 2) 📊

B-Trees, Clustered Indexes, and the OLAP Revolution (Part 2) 📊

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3 min read
The Offset Massacre — Why Cursor Pagination is Mandatory (2026)

The Offset Massacre — Why Cursor Pagination is Mandatory (2026)

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4 min read
Hiểu Chuẩn ACID & Transaction: Đừng Để Database Của Bạn "Toang" Vì Lỗi Cơ Bản!

Hiểu Chuẩn ACID & Transaction: Đừng Để Database Của Bạn "Toang" Vì Lỗi Cơ Bản!

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6 min read
# Understanding Data Modeling in PowerBI: Joins, Relationship and Schemas.

# Understanding Data Modeling in PowerBI: Joins, Relationship and Schemas.

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2 min read
Prisma relationships, finally explained (with MySQL side by side)

Prisma relationships, finally explained (with MySQL side by side)

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12 min read
PostgreSQL Performance Crisis, Cloud-Native DB Deployments, & Collation Deep Dive

PostgreSQL Performance Crisis, Cloud-Native DB Deployments, & Collation Deep Dive

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4 min read
PostgreSQL Performance in the Spotlight: Linux 7.0 Impact, Benchmarking & Vacuum Tuning

PostgreSQL Performance in the Spotlight: Linux 7.0 Impact, Benchmarking & Vacuum Tuning

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3 min read
How to Make xt850 Match xt 850

How to Make xt850 Match xt 850

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6 min read
Modelagem de Dados no Agro: Unindo fluxo de caixa e Ganho Médio Diário (GMD) no mesmo Banco de Dados

Modelagem de Dados no Agro: Unindo fluxo de caixa e Ganho Médio Diário (GMD) no mesmo Banco de Dados

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6 min read
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