In fact, SQL optimization is as simple as eating and drinking water. It teaches you to grasp the essence of SQL!

Time:2021-4-11

preface

Sol optimization is not simple. To do well in sol optimization, you need to master the knowledge of database architecture, table and index design, efficient sol method, advanced sol syntax, a variety of optimization tools, and even analyze the business characteristics and understand the shortcomings of the optimizer. Only by establishing sol optimization methodology system, can we find the most suitable method to optimize sol quickly, so as to solve the performance problem of sol 51. Next, I will explain how to optimize the performance of sol, I believe readers will benefit a lot

High status of SQL

In any IT system, data is the core, and it is also the hot spot of access and presentation. There are almost no it projects separated from the database, or even no programmers who do not need to operate the database. The only one that can interact with the database seamlessly is sol. In addition, sol is a kind of “fool language” which is very easy to learn. Any where condition is a requirement implementation. Basically, novice developers can write sol by sitting down and looking at simple syntax. If they have time to learn while doing, almost all sols will be written. Take my own example, someone suddenly asked me how long I had studied sol development, and I almost instinctively said: Sol development, do I take the time to learn it? Isn’t it natural to write sol?

SQL optimization

Sol optimization is certainly much more difficult than sol writing itself, but there are also some basic knowledge of optimization, such as sol execution plan, index principle, and so on. These are much more complex than the preparation of sol itself, so it is far from enough to become a sol optimization master to only know some basic knowledge of optimization, and it also needs the precipitation of experience, and it needs to be transformed into your methodology.
To solve problems, we should pay attention to efficiency. First we should consider the optimization without rewriting, and then we should consider the optimization without rewriting. The optimization without rewriting depends on the precipitation of architecture knowledge, while rewriting should consider two ideas: proper consideration, logic equivalent rewriting and business rewriting. Among them, business rewriting is the highest realm of SQL optimization In addition, there is a certain amount of knowledge precipitation, advanced SQL syntax is also properly mastered, which can help us a lot in many occasions

SQL learning route

In fact, SQL optimization is as simple as eating and drinking water. It teaches you to grasp the essence of SQL!
In fact, SQL optimization is as simple as eating and drinking water. It teaches you to grasp the essence of SQL!

Next, we will formally enter the SQL optimization learning, all of the content I have been compiled to PDF files for you. Due to space limitations, below is a part of the important content for you. I need to pay attention to my official account with this complete SQL tuning tutorial. I will get free future!

The first chapter is to optimize SQL with tools

In fact, SQL optimization is as simple as eating and drinking water. It teaches you to grasp the essence of SQL!
Chapter 2: speed up the SQL optimization process
In fact, SQL optimization is as simple as eating and drinking water. It teaches you to grasp the essence of SQL!

Chapter 3: how to understand SQL execution plan

In fact, SQL optimization is as simple as eating and drinking water. It teaches you to grasp the essence of SQL!

Chapter 4 operation research – how to control SQL execution plan

In fact, SQL optimization is as simple as eating and drinking water. It teaches you to grasp the essence of SQL!

Chapter 5 feel architecture makes SQL fly

In fact, SQL optimization is as simple as eating and drinking water. It teaches you to grasp the essence of SQL!

Chapter 6 wait a minute, experience logic structure, let SQL fly

In fact, SQL optimization is as simple as eating and drinking water. It teaches you to grasp the essence of SQL!

The seventh chapter explores the design of table to make SQL fly

In fact, SQL optimization is as simple as eating and drinking water. It teaches you to grasp the essence of SQL!

Chapter 8 learn how index makes SQL fly

In fact, SQL optimization is as simple as eating and drinking water. It teaches you to grasp the essence of SQL!

Chapter 9 make clear the obstacles of index and let SQL fly

In fact, SQL optimization is as simple as eating and drinking water. It teaches you to grasp the essence of SQL!

Chapter 10 real index application makes SQL fly

In fact, SQL optimization is as simple as eating and drinking water. It teaches you to grasp the essence of SQL!

Chapter 11 the secret of table connection makes SQL fly

In fact, SQL optimization is as simple as eating and drinking water. It teaches you to grasp the essence of SQL!

Chapter 12 start, process function optimization let SQL fly

In fact, SQL optimization is as simple as eating and drinking water. It teaches you to grasp the essence of SQL!
##Summary
This tutorial is far from enough to cover all the so optimization knowledge, and the specific so optimization content can not be carried out in detail. On the one hand, it is limited to the length, on the other hand, it is also limited to the knowledge level of the author. But I don’t think the detailed encyclopedia optimization is actually the most important thing for readers. Taking communication identification and thinking exploration as the last chapter of the whole process, I want to tell you that questioning exploration is more important than learning! I need to pay attention to my official account if I need this SQL optimization course.Bright futureFree access, hope to help you!

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