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

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🌙 Late Night Chronicles: #5 Your First MySQL Commands 🚀

🌙 Late Night Chronicles: #5 Your First MySQL Commands 🚀

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2 min read
Multi-Tenant SQL Reporting: How to Show Each Customer Only Their Own Data

Multi-Tenant SQL Reporting: How to Show Each Customer Only Their Own Data

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5 min read
PostgreSQL Foreign Data Wrappers: Cross-Database Queries Explained

PostgreSQL Foreign Data Wrappers: Cross-Database Queries Explained

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4 min read
🌙 Late Night Chronicles: #4 Understanding MySQL Data Types

🌙 Late Night Chronicles: #4 Understanding MySQL Data Types

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2 min read
UPSERT in MySQL, PostgreSQL, SQLite & MS SQL Server — A Complete Comparison

UPSERT in MySQL, PostgreSQL, SQLite & MS SQL Server — A Complete Comparison

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2 min read
How to Find the Postgres Indexes Your Planner Never Picks (I Found 20 of 51)

78% index disk waste revealed by custom tools

How to Find the Postgres Indexes Your Planner Never Picks (I Found 20 of 51)

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10 min read
Set-Based Updates in Rails: 4 Hours to 8 Seconds

Set-Based Updates in Rails: 4 Hours to 8 Seconds

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5 min read
SQLite Internals, PostgreSQL Extensions & Performance Tuning Updates

SQLite Internals, PostgreSQL Extensions & Performance Tuning Updates

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3 min read
A Look into SQL Query Basics

A Look into SQL Query Basics

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2 min read
ClickHouse JOINs Aren't Slow Anymore (You're Reading 2020's Docs)

ClickHouse JOINs Aren't Slow Anymore (You're Reading 2020's Docs)

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6 min read
Broadcast Joins vs. Sort-Merge Joins: Choosing the Right Join Strategy in Apache Spark

Broadcast Joins vs. Sort-Merge Joins: Choosing the Right Join Strategy in Apache Spark

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3 min read
Advanced SQL Techniques Every Data Analyst Should Know

Advanced SQL Techniques Every Data Analyst Should Know

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6 min read
DuckDB Streaming, SQLite BLOB Output, & Securing Postgres for AI Agents

DuckDB Streaming, SQLite BLOB Output, & Securing Postgres for AI Agents

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3 min read
Don't Trust AI-Generated SQL Blindly: A Developer's Validation Checklist

Don't Trust AI-Generated SQL Blindly: A Developer's Validation Checklist

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6 min read
Indexing Strategies for Faster Database Queries

Indexing Strategies for Faster Database Queries

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7 min read
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