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  A Simple Guide to a Powerful SQL Feature Welcome back to the latest part in our series on MySQL for Beginners! Today, we’ll explore Common Table Expressions (CTEs), an excellent SQL tool that may greatly streamline complicated queries. CTEs are a useful tool to have in your toolbox if you’ve ever had to write complex SQL queries. Common Table Expressions: What Are They? Consider yourself constructing a Lego palace. Starting with basic bricks, you can build walls, towers, and eventually a magnificent castle by combining them. CTEs work similarly. They allow you to break down complex queries into smaller, more manageable parts, just like building blocks. Why Use CTEs? Improved Readability:  By breaking down complex queries, CTEs make your SQL code easier to understand and maintain. Reusability:  You can reference a CTE multiple times within a single query, reducing redundancy and improving efficiency. Hierarchical Queries:  CTEs are particularly useful for handling h...

SQL is a powerful and versatile language that can be used to manipulate and analyze data from relational databases. However, SQL is not limited to basic operations such as selecting, inserting, updating, and deleting data. There are many advanced features and functions that can help you perform complex tasks and queries with SQL. In this post, we will explore some of these advanced topics in SQL, such as JSON functions, geospatial functions, regular expressions, and NoSQL vs. SQL. We will also provide examples and references for further learning. This post is part of the SQL Learning Series, a comprehensive guide to learn SQL from basic to advanced level. JSON Functions: JSON (JavaScript Object Notation) is a popular data format that is widely used for exchanging and storing data on the web. JSON data can be represented as a collection of key-value pairs, where the keys are strings and the values can be strings, numbers, booleans, arrays, or objects. JSON data can be easily parsed and ...

SQL is a powerful and popular language for querying and manipulating data in relational databases. However, writing efficient and fast SQL queries is not always easy. Sometimes, a poorly written query can cause performance issues, such as slow response time, high resource consumption, and poor user experience. Therefore, it is important to learn how to optimize SQL queries and improve their performance. In this blog post, we will cover some of the basic concepts and techniques of SQL performance optimization, such as indexing, query optimization, and explain plan. We will also provide some examples and references for further learning. This post is part of the SQL Learning Series, where we aim to teach you the fundamentals and best practices of SQL in a simple and practical way. If you are interested in learning more about SQL, please follow me on Medium and  LinkedIn , and check out the other posts in this series. What is SQL Performance Optimization? SQL performance optimization i...