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

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The Data Engineering Take-Home Assessment: How to Turn a 4-Hour Test Into a Job Offer

The Data Engineering Take-Home Assessment: How to Turn a 4-Hour Test Into a Job Offer

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14 min read
PostgreSQL for Data Engineers: Indexes, Bulk Loads, and the Patterns That Actually Matter

PostgreSQL for Data Engineers: Indexes, Bulk Loads, and the Patterns That Actually Matter

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13 min read
Aggregations: Counting, Summing, and Averaging Your Data

Aggregations: Counting, Summing, and Averaging Your Data

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7 min read
PostgreSQL Subquery and CTE Optimization

PostgreSQL Subquery and CTE Optimization

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8 min read
Database Indexing Mistakes That Kill SaaS Performance at Scale

Database Indexing Mistakes That Kill SaaS Performance at Scale

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6 min read
5 SQL queries developers always have to look up (with copy-paste answers)

5 SQL queries developers always have to look up (with copy-paste answers)

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2 min read
SQL Pattern Series #2: The Match Pattern

SQL Pattern Series #2: The Match Pattern

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3 min read
SQL Basics: Talking to a Database for the First Time

SQL Basics: Talking to a Database for the First Time

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7 min read
Transitioning to Data Engineering: My Top 4 Essential Tools So Far

Transitioning to Data Engineering: My Top 4 Essential Tools So Far

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1 min read
PostgreSQL Extension for Row Padding, pgBackRest EOL, and SQLite Windows XP Support

PostgreSQL Extension for Row Padding, pgBackRest EOL, and SQLite Windows XP Support

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3 min read
Our API Was Successfully Hacked. Here's What We Fixed Before the Regulator Showed Up

Our API Was Successfully Hacked. Here's What We Fixed Before the Regulator Showed Up

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4 min read
PostgreSQL Join Optimization: Nested Loop, Hash, and Merge

PostgreSQL Join Optimization: Nested Loop, Hash, and Merge

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11 min read
Your Test Data Is Type-Correct and Still Invalid: 6 Postgres Schema Features Generators Skip

Your Test Data Is Type-Correct and Still Invalid: 6 Postgres Schema Features Generators Skip

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9 min read
How I Exported 1 Million+ Oracle Records to CSV in Under 30 Seconds Using Node.js

How I Exported 1 Million+ Oracle Records to CSV in Under 30 Seconds Using Node.js

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3 min read
Pivotal: A better syntax for data analysis in Python

Pivotal: A better syntax for data analysis in Python

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6 min read
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