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

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I built a free SQL practice game where you work at a fictional Singapore bank

I built a free SQL practice game where you work at a fictional Singapore bank

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2 min read
Day 5 of 100 Days of ClickHouse®: Writing Your First Query

Day 5 of 100 Days of ClickHouse®: Writing Your First Query

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5 min read
Day 19 of 60: From Raw SQL to a Full Stack FastAPI App.

Day 19 of 60: From Raw SQL to a Full Stack FastAPI App.

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3 min read
Building a SQL Lexer in Rust: Why I Replaced `Vec<char>` with `&str` and `Ident(String)` with Spans

Building a SQL Lexer in Rust: Why I Replaced `Vec<char>` with `&str` and `Ident(String)` with Spans

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3 min read
Understanding Logic, Reusability and Integrity On SQL ; Procedures, Functions and Transactions.

Understanding Logic, Reusability and Integrity On SQL ; Procedures, Functions and Transactions.

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2 min read
PostgreSQL Query Rewriting Techniques

PostgreSQL Query Rewriting Techniques

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9 min read
Subqueries vs. CTEs in SQL: What They Are and When to Use Each.

Subqueries vs. CTEs in SQL: What They Are and When to Use Each.

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7 min read
The bug your Typescript compiler and SQL migration both miss

The bug your Typescript compiler and SQL migration both miss

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1 min read
Query Markdown as a Database with mq-db: SQL, mq, and Interval Indexes

Query Markdown as a Database with mq-db: SQL, mq, and Interval Indexes

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4 min read
Getting Started with pg_durable: Workflows Inside PostgreSQL

Getting Started with pg_durable: Workflows Inside PostgreSQL

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11 min read
Stop Wiring Up Database Drivers Manually — A Simpler Python Database API

Stop Wiring Up Database Drivers Manually — A Simpler Python Database API

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5 min read
The N+1 Query That Killed Our Database, And How I Fixed It

The N+1 Query That Killed Our Database, And How I Fixed It

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4 min read
💡 MySQL INNER JOIN vs LEFT JOIN — which one should you actually use?

💡 MySQL INNER JOIN vs LEFT JOIN — which one should you actually use?

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7 min read
I built a 57-line asyncpg wrapper because SQLAlchemy was driving me insane

I built a 57-line asyncpg wrapper because SQLAlchemy was driving me insane

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2 min read
SQL vs NoSQL — How to Choose the Right Database for Your System

SQL vs NoSQL — How to Choose the Right Database for Your System

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2 min read
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