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

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day 01 of learning data engineering (step1: sql joins and set operators)

day 01 of learning data engineering (step1: sql joins and set operators)

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3 min read
PostgreSQL 2200G Error: Causes and Solutions Complete Guide

PostgreSQL 2200G Error: Causes and Solutions Complete Guide

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3 min read
Real-Time Metrics Dashboards with SQL: Patterns That Actually Scale

Real-Time Metrics Dashboards with SQL: Patterns That Actually Scale

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7 min read
PostgreSQL 2200C Error: Causes and Solutions Complete Guide

PostgreSQL 2200C Error: Causes and Solutions Complete Guide

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3 min read
How to Format SQL Queries in Python: Best Practices, Gotchas, and Real-World Examples

How to Format SQL Queries in Python: Best Practices, Gotchas, and Real-World Examples

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6 min read
SQL for data analysis, the 10 query patterns that matter

SQL for data analysis, the 10 query patterns that matter

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2 min read
Your Database Is Fast. Your Queries Are Slow.

Your Database Is Fast. Your Queries Are Slow.

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4 min read
SQL Explorer: Run Full SQL on CSV, Parquet & JSONL Files in Your Browser

SQL Explorer: Run Full SQL on CSV, Parquet & JSONL Files in Your Browser

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2 min read
PostgreSQL 2202H Error: Causes and Solutions Complete Guide

PostgreSQL 2202H Error: Causes and Solutions Complete Guide

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3 min read
DuckDB Delta Lake Writes, Cross-DB Query Planning, and Pterocos SQLite/DuckDB Editor

DuckDB Delta Lake Writes, Cross-DB Query Planning, and Pterocos SQLite/DuckDB Editor

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3 min read
PostgreSQL 2201X Error: Causes and Solutions Complete Guide

PostgreSQL 2201X Error: Causes and Solutions Complete Guide

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3 min read
QN : Ingest and transform data in a lakehouse

QN : Ingest and transform data in a lakehouse

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2 min read
DuckLake Spec, pg_background 2.0, and pgsql_tweaks 1.0.3 Enhance Database Ecosystem

DuckLake Spec, pg_background 2.0, and pgsql_tweaks 1.0.3 Enhance Database Ecosystem

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4 min read
Update record using JooqTemplate

Update record using JooqTemplate

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1 min read
Retention cohort analysis with plain SQL

Retention cohort analysis with plain SQL

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2 min read
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