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This article focuses on "what are the reasons for developers to learn SQL". Interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Now let the editor take you to learn "what are the reasons for developers to learn SQL?"

SQL is portable

Computer science students are taught hundreds of technical and theoretical concepts as they earn their degrees, many of which cannot be directly applied to daily programming tasks, but SQL introduces students to the basic concepts that can be transferred between different platforms, which have common vocabularies and toolsets that students can take anywhere.

Although each database vendor implements its own extension, each new version of the vendor conforms to the ANSI/ISO SQL standard. Standards compatibility, while subtle, also enables you to carry your knowledge from one platform to another. If you study SQL, you will be ready to move from one database to another.

SQL never changes.

My good friend and business partner joked that he became a database administrator because SQL hasn't changed for 35 years, which is mostly true. Vendors implement their own extensions and eventually add them to the SQL standard, but the core of SQL has not changed. Once you understand the fundamentals and relationship principles of SQL (not so difficult), you will find that you can continue to rely on this knowledge to add features and functions that you would have relied on other tools or developers to implement.

SQL easy performance gain

There are only a few places in an application where performance gains can be achieved-the presentation layer, the application layer, and the storage layer. The truth is, your code is well written and well tuned, and getting performance gains from there can be as difficult as getting blood from a stone. On the other hand, the database is a place where it is easy to make some simple changes (add an index, modify a query slightly) and see a huge performance improvement. After spending a significant part of my career staring at the database analyzer as an application developer, I can prove it. It is possible to get performance improvements from program code, but modern frameworks and tools are usually well written, so databases are usually a better place (and considered easier) to find low-hanging fruits for performance improvements.

SQL makes you a better developer

The way programmers practice inspires developers to learn a new language every year, not because the environment is constantly changing, but because learning a new language shows developers new patterns. There are different ways of thinking about problems, and they can be well applied to different solutions (I've learned a lot about functional programming recently). Learning SQL can teach you to think in sets rather than iterations. In the long run, this will change the way you think when dealing with data and improve your database code.

Improve communication between teams

Have you ever tried to talk to someone who speaks the same language but speaks very different dialects? Outside of work, communicating across language barriers can be difficult, but when a project's success depends on it, it's completely maddening. Learning SQL will help you communicate your goals with the database administrator team. They don't need to parse what you mean. You can tell them exactly what you need. In the end, there are fewer misunderstandings, things can be done faster, and you will no longer be "the maddening developer."

Job security

I hate to say this, but studying SQL may mean that you can keep your job when the Ted in the next cubicle is fired during layoff season. The more skills you have and the more job functions you can perform, the more valuable you will become to your current employer (and future employer). If you can work with both the database team and the development team, you become a valuable resource, and both teams depend on you for success.

SQL is really not that difficult.

Contrary to popular belief, SQL is not a difficult language to learn. SQL is a different way of thinking, that's for sure, but it's not difficult. There are only a few instructions, operators, and data types recorded in the ANSI/ISO standard. Although vendors will add their own features, there are still some streamlined core knowledge that you can learn and apply everywhere you go.

Understand when it is not suitable for a database

Databases are phenomenal tools for solving many problems, but bad for solving more problems. In other words: you probably shouldn't dig a trench with a hammer. By learning and understanding SQL, you will be able to make better decisions and move poorly performing code out of the database. In fact, you will be able to find the problem before it forms.

Once you understand SQL, you will better understand the limitations of a relational database management system. You will know which parts of the application can safely exist in a database and which parts need to be moved to different tiers. Some data validation should be stored with the data, while others should not. Understanding how SQL works will help you decide which rules should be kept in the database.

Make troubleshooting easier

It is well known that running applications are difficult to troubleshoot. The more complexity and layering are involved, the more difficult it is to troubleshoot an application. A good understanding of SQL makes it possible to quickly isolate problems that exist in the database. In other words: understanding SQL makes it easy to locate the problem at one of many different layers of your application.

At this point, I believe you have a deeper understanding of "what are the reasons for developers to learn SQL". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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