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This article focuses on "what are the advantages of mysql stored procedures", 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 advantages of mysql stored procedures"?

In mysql, stored procedure is a set of SQL statements to complete specific functions; advantages: 1, encapsulation; 2, can enhance the function and flexibility of SQL statements; 3, can reduce network traffic; 4, high performance; 5, improve database security and data integrity; 6, make data independent.

The operating environment of this tutorial: windows7 system, mysql8 version, Dell G3 computer.

A stored procedure is a collection of SQL statements that perform specific functions. The purpose of using stored procedures is to pre-write common or complex work in SQL statements and store them with a specified name. This process is compiled and optimized and stored in the database server, so it is called a stored procedure. When you need the database to provide the same service as the defined stored procedure in the future, you only need to call "CALL stored procedure name" to do it automatically.

The SQL statements commonly used to manipulate the database need to be compiled and then executed. Stored procedures execute SQL statements in a different way.

A stored procedure is a programmable function that is created and saved in the database and is generally composed of SQL statements and some special control structures. Stored procedures are especially appropriate when you want to perform the same specific functions on different applications or platforms.

Stored procedures were not supported before MySQL version 5. 0, which greatly reduced the application of MySQL. MySQL has supported stored procedures since version 5.0, which not only improves the processing speed of the database, but also improves the flexibility of database programming.

Advantages of mysql stored procedures

Writing stored procedures is slightly more demanding for developers, but this does not affect the widespread use of stored procedures, because stored procedures have the following advantages:

1) encapsulation

Usually, multiple SQL statements are needed to complete a logic function, and parameters are likely to be transferred between each statement, so writing logic functions is relatively complicated, and stored procedures can include these SQL statements in a separate unit, so that complex SQL statements can not be seen by the outside world, and only simple calls are needed to achieve the purpose. And database professionals can modify the stored procedure at any time without affecting the application source code that calls it.

2) it can enhance the function and flexibility of SQL statement

The stored procedure can be written with flow control statements, which has strong flexibility and can complete complex judgments and more complex operations.

3) reduce network traffic

Because the stored procedure runs on the server side and executes quickly, when the stored procedure is called on the client computer, only the calling statement is transmitted in the network, thus reducing the network load.

4) High performance

When the stored procedure is successfully compiled, it is stored in the database server, and the client can call it directly later, so that all SQL statements will be executed from the server, thus improving performance. However, it should be noted that the more stored procedures, the better, too much use of stored procedures will affect system performance.

5) improve database security and data integrity

One way to improve the security of a stored procedure is to use it as an intermediate component. Some tables can be manipulated in the stored procedure, and then the stored procedure can be provided to external programs as an interface. In this way, external programs can not directly manipulate database tables, but can only operate the corresponding tables through stored procedures, so to a certain extent, security can be improved.

6) make the data independent

The independence of data can achieve the effect of decoupling, that is, the program can call stored procedures instead of executing multiple SQL statements. In this case, the stored procedure isolates the data from the user, and the advantage is that when the structure of the data table changes, the calling table does not need to modify the program, but only needs the database manager to rewrite the stored procedure.

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