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This article mainly explains the advantages of SQL Server stored procedure function. Interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let's take you to learn the advantages of SQL Server stored procedure function!

Advantages of stored procedure functionality

Why use stored procedures? Here are some of the main benefits of stored process technology:

Precompiled executor. SQL Server only needs to compile each stored procedure once and then reuse the execution plan. This feature greatly improves program performance by repeatedly calling stored programs. Reduce the amount of information transferred between client and server. If your work environment is bandwidth-limited, stored procedure technology can certainly satisfy you because it can shorten long SQL queries that need to be transmitted to one line. Effective reuse of code and programming. Stored procedures can be used by multiple users or by multiple clients. This reduces the time of the development cycle. Enhanced security controls. You can allow users to execute stored procedures independently without giving them access to tables.

structure

The structure of stored procedures is very similar to other programming languages. Stored procedures accept data in the form of input parameters. These input parameters are applied when executing a series of statements and generate results. The result is returned using the recordset, output parameters, and return code. It sounds complicated, but storing programs is actually pretty simple.

examples

Suppose we have a table called Inventory. The data in the table needs to be updated in real time. The warehouse manager will constantly check the quantity of inventory in the warehouse and the quantity of inventory available for shipment. Previously, warehouse managers in each region would query:

Select Product,Quantity FROMInventory WHEREWarehouse='FL'

Such queries make SQL Server performance very inefficient. Every time the warehouse manager executes the query, the database server has to recompile it and start executing it again. Such queries also require knowledge of SQL and access to tabular data by the warehouse manager.

We can simplify this query process by using stored procedures. Start by creating a procedure called sp_GetInventory that captures inventory levels for an existing warehouse. Here is the SQL code that creates the program:

The following is a reference fragment: CREATEPROCEDUREsp_GetInventory @locationvarchar(10) AS SELECTProduct,Quantity FROMInventory WHEREWarehouse=@location

Warehouse managers in Region A can obtain inventory levels by executing the following commands:

The following is a reference fragment: EXECUTEsp_GetInventory'FL'

Warehouse managers in Region B can use the same storage process to access inventory information for that region.

The following is a reference fragment: EXECUTEsp_GetInventory'NY'

Of course, this is just a simple example, but you can see the benefits of storage procedures. Warehouse managers do not necessarily have to understand SQL or how stored procedures work internally. From a performance perspective, the storage process undoubtedly greatly improves the efficiency of work. SQL Server only needs to create an execution plan once and then reuse stored procedures by entering the appropriate parameters each time they execute.

At this point, I believe that we have a deeper understanding of the "advantages of SQL Server stored procedure functionality", may wish to actually operate it! Here is the website, more related content can enter the relevant channels for inquiry, pay attention to us, continue to learn!

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