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

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The Ultimate Guide to Databricks Data Engineer Associate Exam: Everything You Need to Know

The Ultimate Guide to Databricks Data Engineer Associate Exam: Everything You Need to Know

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40 min read
COALESCE in SQL: the “Don’t Let NULL Win” Function You’ll Use Everywhere

COALESCE in SQL: the “Don’t Let NULL Win” Function You’ll Use Everywhere

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2 min read
Real world considerations: MS-SQL vs PostgreSQL vs MySQL

Real world considerations: MS-SQL vs PostgreSQL vs MySQL

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12 min read
How Do PostgreSQL Indices Work, Anyways?

How Do PostgreSQL Indices Work, Anyways?

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6 min read
left join an effective satellite without duplicating rows (use a cte)

left join an effective satellite without duplicating rows (use a cte)

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3 min read
Building a SQL Tokenizer and Formatter From Scratch — Supporting 6 Dialects

Building a SQL Tokenizer and Formatter From Scratch — Supporting 6 Dialects

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5 min read
Connecting power bi to SQL databases locally and through cloud service.

Connecting power bi to SQL databases locally and through cloud service.

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5 min read
SQL Query Optimization Guide

SQL Query Optimization Guide

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5 min read
Zero-Downtime Schema Changes in SQL Server: The Reality Behind “Just Run the Migration”

Zero-Downtime Schema Changes in SQL Server: The Reality Behind “Just Run the Migration”

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6 min read
Adding NOT NULL Constraints to Existing PostgreSQL Columns Safely

Adding NOT NULL Constraints to Existing PostgreSQL Columns Safely

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5 min read
Number Guessing Game

Number Guessing Game

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2 min read
# Module 4 Summary - Analytics Engineering with dbt

# Module 4 Summary - Analytics Engineering with dbt

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2 min read
Part 3: Testing, Documentation & Deployment 🚀

Part 3: Testing, Documentation & Deployment 🚀

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5 min read
PostgreSQL vs MongoDB in 2026: When to Choose SQL Over NoSQL

PostgreSQL vs MongoDB in 2026: When to Choose SQL Over NoSQL

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12 min read
Solving MSSQL's 2100 Parameter Limit: From IN Clause to Cursor-Based Pagination

Solving MSSQL's 2100 Parameter Limit: From IN Clause to Cursor-Based Pagination

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4 min read
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