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Mysql stored procedure
Mysql stored procedure










mysql stored procedure

How to Create a Stored Procedure in SQL with Default Parameters? Like this one, you can also create a stored procedure with multiple parameters. In this example, you will have to create a new stored procedure in SQL with parameters.Īs you can see, to execute a stored procedure with parameters, you have to pass the expected arguments along with EXEC procedure_name. How to Create a Stored Procedure with Parameters? You can also set it to OFF, to see the number of rows affected. Thus, setting NOCOUNT to ON will prevent displaying the messages of the number of rows affected.

mysql stored procedure

But why? NOCOUNT tells the server not to count the number of affected rows. If you have noticed, this example used SET NOCOUNT ON while creating the stored procedure. Let’s execute the procedure we have created.Īs you can see in the output, the stored procedure executed the Join statement and gave the desired result. Now, since you have created the procedure, it's time to execute it. This will create the stored procedure, and you will see the “command(s) executed successfully” message in Microsoft SQL Server Management Studio. INNER JOIN CarDescription CD ON C.CarID=CD.CarID SELECT C.CarID,C.CarName,CD.CarDescription FROM For the simple procedure, you will have to use the JOIN keyword to join both the tables, and output a new one with CarID, CarName, and CarDescription. Now that you have created both the tables, start creating the stored procedure in SQL with the syntax mentioned earlier. INSERT INTO CarDescription VALUES (501,'High-performance sports car from the German manufacturer') INSERT INTO CarDescription VALUES (401,'Luxury SUV from the Italian automotive') INSERT INTO CarDescription VALUES (301,'Luxury sports car from the Italian manufacturer') INSERT INTO CarDescription VALUES (201,'Luxury motorcycle from the German automotive') INSERT INTO CarDescription VALUES (101,'Luxury vehicle from the German automotive') Now create the second table named CarDescription. INSERT INTO Car VALUES (401,'Lamborghini') INSERT INTO Car VALUES (101,'Mercedes-Benz') You will also insert some values in them using the INSERT INTO command. But before that, create two tables using the CREATE TABLE command that you will use throughout the article. You will use the syntax to create a simple stored procedure in SQL. Note: You will work with and look at examples for different parameters in this article. Thus, it receives from, as well as sends a value to the program IN OUT: It is the combination of both IN and OUT.OUT: It will send output value to the program.IN: It is the default parameter that will receive input value from the program.In the syntax mentioned above, the only thing to note here are the parameters, which can be the following three types: The syntax of SQL stored procedure is:ĬREATE or REPLACE PROCEDURE name(parameters) How to Create a Simple Stored Procedure in SQL?Ĭreating a stored procedure in SQL is as easy as it can get. Increases performance: Upon the first use, a plan for the stored procedure is created and stored in the buffer pool for quick execution for the next time.Low network traffic: The server only passes the procedure name instead of the whole query, reducing network traffic.Security: Stored procedures allow you to enhance the security of an application or a database by restricting the users from direct access to the table.Easy to modify: You can quickly change the statements in a stored procedure as and when you want to, with the help of the ALTER TABLE command.Reusable: As mentioned, multiple users and applications can easily use and reuse stored procedures by merely calling it.Stored procedures provide some crucial benefits, which are: What are the Benefits of using a Stored Procedure in SQL?












Mysql stored procedure