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

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Introduction to Relational Databases

Introduction to Relational Databases

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2 min read
Order-based Group Operations (I)

Order-based Group Operations (I)

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6 min read
Custom ordering without custom SQL with Ruby on Rails 7

Custom ordering without custom SQL with Ruby on Rails 7

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2 min read
Materialized View to improve the performance of complex queries?

Materialized View to improve the performance of complex queries?

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3 min read
Maximizing Database Efficiency Mastering Query Optimization in SQL

Maximizing Database Efficiency Mastering Query Optimization in SQL

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2 min read
WEREWOLF WEED

WEREWOLF WEED

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1 min read
Why do we NOLOCK in SQL server with an example

Why do we NOLOCK in SQL server with an example

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1 min read
Why do we NOLOCK AND LOCK in SQL server with an example

Why do we NOLOCK AND LOCK in SQL server with an example

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1 min read
Database server communication and data migration from one database to another server database in SQL server

Database server communication and data migration from one database to another server database in SQL server

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2 min read
How to create and configure a linked server in SQL Server Management Studio

How to create and configure a linked server in SQL Server Management Studio

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2 min read
Inserting Data from One Table to Another in SQL using INSERT INTO using SELECT Statement

Inserting Data from One Table to Another in SQL using INSERT INTO using SELECT Statement

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1 min read
SQL Math Functions with Use Cases

SQL Math Functions with Use Cases

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2 min read
Using SQLite to Examine Data Relationships and Compare Tables

Using SQLite to Examine Data Relationships and Compare Tables

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7 min read
Partition Strategies: Fundamental Concepts for PostgreSQL Partitioning

Partition Strategies: Fundamental Concepts for PostgreSQL Partitioning

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4 min read
Embedded Python Stored Procedure

Embedded Python Stored Procedure

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6 min read
SQL - Use Subqueries for Complex Data Retrieval

SQL - Use Subqueries for Complex Data Retrieval

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1 min read
SQL Stored Procedures - Na visão de um estudante.

SQL Stored Procedures - Na visão de um estudante.

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6 min read
It's not surprising that it's N times faster than ORACLE, such lightweight is the king

It's not surprising that it's N times faster than ORACLE, such lightweight is the king

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7 min read
How Metis Detects Too Many Open Connections on Postgres

How Metis Detects Too Many Open Connections on Postgres

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3 min read
Dominando JOINs no SQL: Guia Completo

Dominando JOINs no SQL: Guia Completo

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4 min read
Monolithic vs. Distributed SQL

Monolithic vs. Distributed SQL

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6 min read
PostgreSQL. How to list the most IOPs-intensive queries?

PostgreSQL. How to list the most IOPs-intensive queries?

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1 min read
Calling all beginners: simple SQL challenge

Calling all beginners: simple SQL challenge

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2 min read
Unlocking the Power of Apache Age: Advanced Techniques for SQL/Cypher Hybrid Queries

Unlocking the Power of Apache Age: Advanced Techniques for SQL/Cypher Hybrid Queries

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2 min read
Group By, Grouping Sets, Cube, and Rollup Queries in SQL

Group By, Grouping Sets, Cube, and Rollup Queries in SQL

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5 min read
SQL and NoSQL databases: What are the types and ideal use cases

SQL and NoSQL databases: What are the types and ideal use cases

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6 min read
Comparing Types of Databases: A Real-World Benchmark Analysis

Comparing Types of Databases: A Real-World Benchmark Analysis

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8 min read
Mastering Graph Queries with Cypher in Apache Age

Mastering Graph Queries with Cypher in Apache Age

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3 min read
O problema de SQL que quase me enlouqueceu

O problema de SQL que quase me enlouqueceu

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5 min read
IN() list filter with Top-N

IN() list filter with Top-N