Aliases in SQL

SQL Aliases 😊

This resembles being host to grand gathering 🎉. Attendees are on their way. Each guest will have distinct moniker. This moniker is an alias. It enhances vibrancy and efficiency in conversations.

In SQL world, we find parallels with aliases. An alias is akin to creating an exhilarating nickname for a column or table. It aids in handling SQL queries. At the same time it also adds a touch of fun. 🎵

Column Aliases 🧩

Let's say there's a table of superheroes. You want to know their superhero names real names. Columns can get nicknames. Here's how:

SELECT 'Real Name' AS real_name, 'Superhero Name' AS superhero_name FROM superheroes;
    

The real name is now 'Real Name'. The superhero name is now 'Superhero Name'. Both now get fun nicknames! 😄

Table Aliases 🏰

Sometimes your SQL query could spotlight more tables. It's less complex to give them nicknames. Suppose you own a table of employees and a table of departments. You can use this query:

SELECT e.name AS 'Employee Name', d.name AS 'Department Name'
FROM employees e
JOIN departments d ON e.department_id = d.id;
    

In this query:

• e.name stands for 'Employee Name'.
• d.name stands for 'Department Name'.

This is done with a JOIN of employees alias set as e and departments alias set as d. A condition exists. e.department_id must match with d.id.

In total, we have three party attendees:

• "Employees" represented by e
• "Departments" represented by d
• The database, which is represented by overall query text.

It's a lively and informative party. You're using shorthand. You're keeping things fun. 😎

Why Use SQL Aliases?

SQL aliases raise readability and enhance satisfaction in SQL queries. Picture calling friends by amusing nicknames at party! 🥳

Consider SQL aliases as nicknames for tables and columns. They turn SQL gathering into vibrant and efficient affair. Everything rises to another level! 🚀