sql – ITFROMZERO – Share tobe shared!

DuckDB: SQLite for Analytics – Master the Art of Processing Tens of GBs Smoothly on Your Laptop

By admin May 10, 2026

Discover DuckDB – the perfect alternative to Pandas for large-scale data processing on local machines. Learn how to query massive CSV/Parquet files directly and pick up practical performance optimization tips.

Database

Mastering CockroachDB: When a ‘Resilient’ SQL Database Helps You Sleep Better

By admin May 1, 2026

A 2 AM system crash is every developer's nightmare. Discover how to deploy CockroachDB—a distributed SQL database with self-healing capabilities for absolute uptime.

Database

Getting Started with ClickHouse: A High-Performance OLAP Database for Large-Scale Analytics

By admin April 28, 2026

ClickHouse is a columnar OLAP database that lets you analyze hundreds of millions of rows in seconds. This guide covers installation on Linux, choosing the right table engine, importing real-world data, and production deployment tips for DevOps teams.

Database

PostgreSQL FDW: The Ultimate Trick to Query MySQL, MongoDB, and CSV Directly Without ETL

By admin April 28, 2026

Forget complex ETL! A detailed guide on using PostgreSQL FDW to query MySQL, MongoDB, and CSV directly. Speed up multi-source data processing with just a few SQL lines.

Database

PostgreSQL Row Level Security (RLS): Securing Multi-tenant Data at the Core

By admin April 27, 2026

Learn how to configure PostgreSQL Row Level Security (RLS) for fine-grained data protection. An optimal solution for Multi-tenant/SaaS applications with real-world performance optimization tips.

Security

Turning Linux into a Database: Querying and Security Monitoring with osquery

By admin April 21, 2026

Stop struggling with Bash scripts. Learn how to use osquery to query the Linux operating system using SQL, making security monitoring and infrastructure management 10x more efficient.

MySQL

MySQL 8 CTE: A Professional Solution for Hierarchical Data and Recursive Queries

By admin April 21, 2026

A detailed guide on using CTE and Recursive CTE in MySQL 8 to efficiently handle hierarchical data, replace complex Self-joins, and optimize query performance.

Python

SQLAlchemy ORM: The ‘Gold Standard’ Database Management Solution for Pythonistas

By admin April 11, 2026

Say goodbye to messy manual SQL queries. This A-Z SQLAlchemy ORM guide helps you manage databases in Python professionally, securely, and efficiently for DevOps.

Database

Database Schema Design: Don’t Let Technical Debt Sink Your System

By admin April 5, 2026

Learn how to design standard database schemas from 1NF to 3NF, the secrets of applying Denormalization to boost performance, and pitfalls to avoid.

Database

Flyway: A Guide to Automating Database Migration and Efficient Schema Management

By admin March 21, 2026

Manually managing database schema changes can be a nightmare. Flyway automates the entire database migration process, ensuring consistency and minimizing risks. This guide will show you how to install, configure, and use Flyway for effective database schema management.