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

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SQL Key-words with the examples

SQL Key-words with the examples

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19 min read
SQL Puzzles

SQL Puzzles

32
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17 min read
Summary of results

Summary of results

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2 min read
Finding the best SQL query for the task.

Finding the best SQL query for the task.

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4 min read
A SQL function in PostgreSQL

A SQL function in PostgreSQL

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8 min read
Reading Postgres Execution Plans doesn't have to be so complicated

Reading Postgres Execution Plans doesn't have to be so complicated

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6 min read
Efficiently Managing Data with SELECT During INSERT Queries

Efficiently Managing Data with SELECT During INSERT Queries

1
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2 min read
Learn SQL Quickly & Join Data Easily, With This Simple Method & Get into 11 New Professions !!!!

Learn SQL Quickly & Join Data Easily, With This Simple Method & Get into 11 New Professions !!!!

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4 min read
Could Batched Nested Loop improve PostgreSQL like it does for YugabyteDB?

Could Batched Nested Loop improve PostgreSQL like it does for YugabyteDB?

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24 min read
Here comes big data technology that rivals clusters on a single machine

Here comes big data technology that rivals clusters on a single machine

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6 min read
Understanding PostgreSQL and MongoDB Databases: Know When to Use Each

Understanding PostgreSQL and MongoDB Databases: Know When to Use Each

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3 min read
Web Vulnerabilities: SQL Injections

Web Vulnerabilities: SQL Injections

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3 min read
MySQL: Everything You Need To Know

MySQL: Everything You Need To Know

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2 min read
Why you should never use an UUID as the primary key in SQL Databases

Why you should never use an UUID as the primary key in SQL Databases

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2 min read
SQL Cheat Sheet: A Comprehensive Guide to SQL Commands and Queries

SQL Cheat Sheet: A Comprehensive Guide to SQL Commands and Queries

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2 min read
Surrogate Key vs Primary Key: What's the Difference?

Surrogate Key vs Primary Key: What's the Difference?

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11 min read
How to store and calculate historical big data with lower usage frequency

How to store and calculate historical big data with lower usage frequency

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4 min read
`OR` Filter on Two Tables, and Batched Nested Loops

`OR` Filter on Two Tables, and Batched Nested Loops

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6 min read
Communicate with Microsoft SQL Server that works on Flutter app compiled for multiple platforms

Communicate with Microsoft SQL Server that works on Flutter app compiled for multiple platforms

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7 min read
Simple Database Software For MySQL

Simple Database Software For MySQL

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8 min read
Isolation Levels - part XII: To go further

Isolation Levels - part XII: To go further

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2 min read
Slash Slow Queries by Rewriting OR to UNION

Slash Slow Queries by Rewriting OR to UNION

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3 min read
How To Execute A Query In SQL: Using Queries And Data Views

How To Execute A Query In SQL: Using Queries And Data Views

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5 min read
SQL - Handle NULL Values Safely in Queries

SQL - Handle NULL Values Safely in Queries

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1 min read
Importing Data From Multiple MS Access Files To SQL Server

Importing Data From Multiple MS Access Files To SQL Server

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5 min read
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