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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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A CSV Can Be Valid and Still Corrupt Your Import

A CSV Can Be Valid and Still Corrupt Your Import

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2 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
The Same Row Twice: Four Things Keyset Pagination Needs

The Same Row Twice: Four Things Keyset Pagination Needs

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6 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
What is dbt and Why is it in Every Data Engineering Job Listing?

What is dbt and Why is it in Every Data Engineering Job Listing?

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3 min read
SQL Joins Explained.

SQL Joins Explained.

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2 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
Cleaning and Structuring Excel Data for Reliable SQL INSERTs

Cleaning and Structuring Excel Data for Reliable SQL INSERTs

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7 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
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
Introduction to SQL :DDL,DML & Data Quering

Introduction to SQL :DDL,DML & Data Quering

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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
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