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

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Oracle SQL/JSON: The Developer's Guide to Querying JSON Like a Pro

Oracle SQL/JSON: The Developer's Guide to Querying JSON Like a Pro

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58 min read
Building a Vectorized SQL Engine from Scratch in C++ — No Dependencies

Building a Vectorized SQL Engine from Scratch in C++ — No Dependencies

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5 min read
The $15 Per Ride You Didn't Know About: What 243 Million NYC Taxi Rides Reveal

The $15 Per Ride You Didn't Know About: What 243 Million NYC Taxi Rides Reveal

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11 min read
PostGIS SRIDs Explained: Why Your Spatial Queries Return Wrong Results

PostGIS SRIDs Explained: Why Your Spatial Queries Return Wrong Results

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3 min read
PostgreSQL vs MySQL vs SQLite: Choosing the Right Database for Your Project

PostgreSQL vs MySQL vs SQLite: Choosing the Right Database for Your Project

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11 min read
SQL JOIN Tutorial: INNER, LEFT, RIGHT, FULL OUTER Explained

SQL JOIN Tutorial: INNER, LEFT, RIGHT, FULL OUTER Explained

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6 min read
Query Planning Overhead with Many Chunks (And How to Fix It)

Query Planning Overhead with Many Chunks (And How to Fix It)

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4 min read
SQL LIMIT and OFFSET: Paginate Your Query Results Like a Pro

SQL LIMIT and OFFSET: Paginate Your Query Results Like a Pro

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5 min read
Why Data Teams Need Data Lineage: From Common Pain Points to Real-World Challenges

Why Data Teams Need Data Lineage: From Common Pain Points to Real-World Challenges

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4 min read
Understanding SQL: DDL, DML, Filtering, and CASE WHEN

Understanding SQL: DDL, DML, Filtering, and CASE WHEN

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3 min read
Best roadmap to learn SQL programming

Best roadmap to learn SQL programming

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4 min read
I built a zero-friction SQLite Playground for my students

I built a zero-friction SQLite Playground for my students

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2 min read
Why `SUM() OVER (ORDER BY ...)` Sometimes Feels Wrong: A Practical Guide to SQL Window Frames

Why `SUM() OVER (ORDER BY ...)` Sometimes Feels Wrong: A Practical Guide to SQL Window Frames

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9 min read
From Scratch to Queries: Building a School Database with SQL – My Nairobi Academy Project.

From Scratch to Queries: Building a School Database with SQL – My Nairobi Academy Project.

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3 min read
What is Snowflake? A Beginner's Guide to the Cloud Data Warehouse Everyone's Talking About

What is Snowflake? A Beginner's Guide to the Cloud Data Warehouse Everyone's Talking About

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4 min read
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