Скачать или смотреть SQL Showdown: UNION vs. UNION ALL, INTERSECT, EXCEPT - Mastering Data Magic!

In the world of SQL, mastering data manipulation is like wielding magic, and in this video, you're about to become a wizard! Get ready for the ultimate showdown between UNION, UNION ALL, INTERSECT, and EXCEPT, and let's clear up the SQL mysteries once and for all!

But that's not all – we'll dive into the fascinating world of database languages. Discover the similarities and differences when using these operators in SQL, MySQL, and PostgreSQL. With this knowledge, you'll be equipped to conquer data in any realm. Join us for an epic data journey – your database skills will thank you! 👊💻💡

In this video, we'll:

🤯 Unmask the secrets of UNION, UNION ALL, INTERSECT, and EXCEPT.
🌐 Explore how these operators vary in SQL, MySQL, and PostgreSQL.
🚀 Provide real-world examples to cement your understanding.
Don't miss this magical data showdown – it's time to unlock the full potential of your database skills!

Table Syntax:

--AllEmployees
CREATE TABLE AllEmployees (
ID INT PRIMARY KEY,
Name VARCHAR(255),
Department NVARCHAR(255)
);

INSERT INTO AllEmployees (ID, Name, Department)
VALUES
(1, 'Alice', 'HR'),
(2, 'Bob', 'IT'),
(3, 'Carol', 'Finance'),
(4, 'David', 'IT'),
(5, 'Eve', 'Marketing');

--TempEmployees

CREATE TABLE TempEmployees (
ID INT PRIMARY KEY,
Name VARCHAR(255),
Department nVARCHAR(255)
);

INSERT INTO TempEmployees (ID, Name, Department)
VALUES
(2, 'Bob', 'IT'),
(5, 'Eve', 'Marketing'),
(6, 'Frank', 'HR');

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