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How to Find Duplicate Rows in SQL (and Decide What Counts as One)

How to Find Duplicate Rows in SQL (and Decide What Counts as One)

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15 min read
SQL Comment Syntax by Database: MySQL, PostgreSQL, SQL Server, SQLite, Oracle

SQL Comment Syntax by Database: MySQL, PostgreSQL, SQL Server, SQLite, Oracle

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5 min read
Postgres RLS in Symfony: a setup check for a missing FORCE, and two ways it says "nothing to report" without looking

Postgres RLS in Symfony: a setup check for a missing FORCE, and two ways it says "nothing to report" without looking

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6 min read
DDL and DML WHAT ARE THEY?

DDL and DML WHAT ARE THEY?

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1 min read
I benchmarked CognoDB against four other graph databases. The most interesting result had nothing to do with CognoDB.

I benchmarked CognoDB against four other graph databases. The most interesting result had nothing to do with CognoDB.

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5 min read
GIT WORKFLOW

GIT WORKFLOW

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2 min read
Power BI: Data Modelling, Relationships and Joins

Power BI: Data Modelling, Relationships and Joins

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7 min read
Postgres Won't Let Me Double-Book a Parking Slot: Exclusion Constraints in Practice

Postgres Won't Let Me Double-Book a Parking Slot: Exclusion Constraints in Practice

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5 min read
Schema catalogs for AI assistants: the layer nobody wants to maintain

Schema catalogs for AI assistants: the layer nobody wants to maintain

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6 min read
PostgreSQL 19's data checksums can now be switched on without stopping the server

Benchmark shows minimal write throughput impact

PostgreSQL 19's data checksums can now be switched on without stopping the server

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7 min read
I benchmarked 5 graph databases. The first four hours measured the Indian Ocean.

I benchmarked 5 graph databases. The first four hours measured the Indian Ocean.

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6 min read
My alert fired 7 times across 1963 pairs. I assumed the thresholds were too high. They were, and it didn't matter

My alert fired 7 times across 1963 pairs. I assumed the thresholds were too high. They were, and it didn't matter

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4 min read
Window functions vs Aggregate functions

Window functions vs Aggregate functions

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9 min read
Building Vektor: Natural Language In, Validated PostgreSQL Schemas Out 🚀

Building Vektor: Natural Language In, Validated PostgreSQL Schemas Out 🚀

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2 min read
Column Comments in PostgreSQL and MySQL: How to Document Columns Without a Migration

Column Comments in PostgreSQL and MySQL: How to Document Columns Without a Migration

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7 min read
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