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Nemtech Official

👋 Hi Everyone! I'm Nemtulla Khan 👋

Welcome to #NEMTECH OFFICIAL, your go-to place for learning all things web development and technology! With over 5.6 years of experience as a full-stack developer, I specialize in building web applications using C#, .NET 6, SQL, Azure DevOps, Angular, React, and much more.

I’m passionate about sharing knowledge, whether it’s through tutorials, blog posts, or contributing to Open Source. If you're a developer, trader, or tech enthusiast, this is the right place for you!

💡 Why Subscribe?
You'll get tutorials, insights, and discussions that will help you grow as a developer, enhance your skills, and stay updated with modern tech stacks.

🔔 Please SUBSCRIBE to #NEMTECH OFFICIAL and join me on this exciting journey!

Feel free to reach out with any questions or suggestions –!

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Nemtech Official

Which SQL command removes duplicate rows?

1 week ago | [YT] | 1

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Nemtech Official

What is the output and how can we fix that.

1 month ago | [YT] | 1

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Nemtech Official

What is the output?

let x = [] - []; console.log(x)

3 months ago | [YT] | 1

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Nemtech Official

Guess the output?

3 months ago | [YT] | 1

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Nemtech Official

Understanding SQL Query Execution Order vs. Coding Order

When writing SQL queries, we often write statements like SELECT, FROM, WHERE, and others in a particular sequence, known as the coding order. However, the SQL engine processes these queries in a very different order, called the execution order.

Why is this important?
Knowing the execution order helps you:
• Write optimized and efficient SQL queries.
• Debug complex queries more effectively.
• Understand how SQL engines process your query behind the scenes.

As shown in the diagram:
Coding Order: How we write SQL queries.
Execution Order: The actual sequence SQL follows to process the query.

Key Insight: SQL execution begins with the FROM clause (data source) and ends with LIMIT. This fundamental understanding can transform how you write and troubleshoot SQL queries.

Did I miss any important details? Let me know your thoughts or suggestions in the comments! #nemtech