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select * from SQL

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

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Grant Matrices or Query Rewrites: A Debate for Agent SQL Least Privilege

Grant Matrices or Query Rewrites: A Debate for Agent SQL Least Privilege

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8 min read
What if your Python database code didn't care which database you used?

What if your Python database code didn't care which database you used?

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2 min read
SELECT * and INSERT ... SELECT Broke Production at 3am

SELECT * and INSERT ... SELECT Broke Production at 3am

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3 min read
Query Fingerprints or Literal Text Diffs: A Debate for Agent SQL Regression

Query Fingerprints or Literal Text Diffs: A Debate for Agent SQL Regression

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7 min read
Why "Check Then Write" Booking Logic Breaks Under Real Traffic (And How to Fix It in PostgreSQL)

Why "Check Then Write" Booking Logic Breaks Under Real Traffic (And How to Fix It in PostgreSQL)

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2 min read
From MySQL to PostgreSQL: a much lighter server

From MySQL to PostgreSQL: a much lighter server

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2 min read
Database index on generated column to speed up selection on date (for daily stats)

Database index on generated column to speed up selection on date (for daily stats)

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1 min read
Read Replicas Do Not Fix a Bad Query Plan

Read Replicas Do Not Fix a Bad Query Plan

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4 min read
Why I Put PostgreSQL in WebAssembly to Fix SQL Interview Prep

Why I Put PostgreSQL in WebAssembly to Fix SQL Interview Prep

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5 min read
SQL Indexes Explained (For People Who Just Got Yelled At By a Slow Dashboard)

SQL Indexes Explained (For People Who Just Got Yelled At By a Slow Dashboard)

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4 min read
Open-source tool: Cross-database universal "field-level" data lineage analysis and visualization (Part 2 of 3)

Open-source tool: Cross-database universal "field-level" data lineage analysis and visualization (Part 2 of 3)

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4 min read
From Messy CSV to Business Insight: A Small Python + SQL Analytics Pipeline

From Messy CSV to Business Insight: A Small Python + SQL Analytics Pipeline

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4 min read
Introduction to SQL :DDL,DML & Data Quering

Introduction to SQL :DDL,DML & Data Quering

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4 min read
Is Your Text-to-SQL Agent Just a Fancy Way to Drop Your Production Tables?

Is Your Text-to-SQL Agent Just a Fancy Way to Drop Your Production Tables?

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5 min read
Inside Army's MySQL Dialect: When SQL Dialects Are First-Class Citizens

Inside Army's MySQL Dialect: When SQL Dialects Are First-Class Citizens

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15 min read
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