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Count Date Ranges per Year — From SQL to SPL #23

Problem description & analysis: The x field of the database table example is ID, and the ts field is the time interval.Task: Now we need to count which years are included in the time inte...

26.04.2025 0 Read More

# PostgreSQL Tutorial: 📚 What Really Happens When You Add and Drop Columns 2000 Times in PostgreSQL

PostgreSQL is famous for its robust architecture and SQL standards compliance.But what happens if you keep adding and dropping columns — again and again — 2000 times?Spoiler alert: 🚨 You hit a ...

27.04.2025 0 Read More

SQL JOINs Explained: Connecting Data Across Tables

What are SQL JOINs? In the world of databases, information is often stored across multiple tables to keep things organized and efficient. For example, you might have one table for employee in...

27.04.2025 0 Read More

SQL Tutorial Made Easy: From Basics to Advanced Queries

If you’ve ever wanted to understand how websites, apps, and businesses manage massive amounts of information, learning SQL is a great place to start. SQL (Structured Query Language) is the standard ...

28.04.2025 0 Read More

Best 7 Logical Database Design Tools in 2025

Before the first line of SQL is written, before indexes are added or columns optimized, every serious database begins with a solid logical design. It's the blueprint phase, where you define the what, ...

28.04.2025 0 Read More

PostgreSQL aborts the transactions on error

You may be surprised by this in PostgreSQL: ⛶postgres=!# commit; ROLLBACK postgres=#Yes, I issued a COMMIT but got a ROLLBACK! I'll demo how it happened and how to avoid it. In short, the transactio...

28.04.2025 0 Read More

Thankful welcome from the.groov@gmail.com

I thank you all for allowing me to be a part of the community. I hope I'm able to provide incite and thought provoking requests. I know that I will learn the same from you all. ...

28.04.2025 0 Read More

Exportar Connections do SQL Developer Para a extensão do Vscode

Botão direito em Oracle Conexões -> Exportar conexõesEscolhe a pasta de destino e nome do arquivoEscolha uma senha qualquer para criptografarFinaliza.Na extensão do vs code Crie e Abra uma cone...

28.04.2025 0 Read More

Understanding SQL Injection: What It Is and How to Protect Your Website

SQL injection is a common yet dangerous web security vulnerability that allows attackers to interfere with the queries an application makes to its database. Understanding how SQL injection works is cr...

28.04.2025 0 Read More

Fetch Values from Previous Non-Null Value Rows — From SQL to SPL #24

Problem description & analysis: The database table organisation_user_link stores the current state of the account, where dossier_created is the account creation time.The database table or...

28.04.2025 0 Read More

Count Date Ranges per Year — From SQL to SPL #23

# PostgreSQL Tutorial: 📚 What Really Happens When You Add and Drop Columns 2000 Times in PostgreSQL

SQL JOINs Explained: Connecting Data Across Tables

SQL Tutorial Made Easy: From Basics to Advanced Queries

Best 7 Logical Database Design Tools in 2025

PostgreSQL aborts the transactions on error

Thankful welcome from the.groov@gmail.com

Exportar Connections do SQL Developer Para a extensão do Vscode

Understanding SQL Injection: What It Is and How to Protect Your Website

Fetch Values from Previous Non-Null Value Rows — From SQL to SPL #24

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