How do i create a procedure with parameters in mysql?
Summary: in this tutorial, you will learn how to create stored procedures with parameters, including Show
Introduction to MySQL stored procedure parametersOften, stored procedures have parameters. The parameters make the stored procedure more useful and reusable. A
parameter in a stored procedure has one of three modes: IN parameters
In addition, the value of an OUT parametersThe value of an Notice that the stored procedure cannot access the initial value of the INOUT parametersAn Defining a parameterHere is the basic syntax of defining a parameter in stored procedures:
In this syntax,
MySQL stored procedure parameter examplesLet’s take some examples of using stored procedure parameters. The IN parameter exampleThe following example creates a stored procedure that finds all offices that locate in a country specified by the input parameter
In this example, the
Suppose that you want to find offices locating in the USA, you need to pass an argument (
To
find offices in
Because the
Here’s the error:
The OUT parameter exampleThe following stored procedure returns the number of orders by order status.
The stored procedure
To find the number of orders that already shipped, you call
To get the number of orders that are in-process, you call
the stored procedure
The INOUT parameter exampleThe following example demonstrates how to use an
In this example, the stored procedure These statements illustrate how to call the
Here is the output: In this tutorial, you have learned how create stored procedures with parameters including
Was this tutorial helpful? How do I create a stored procedure with parameters in MySQL Workbench?First, specify the parameter mode, which can be IN , OUT or INOUT depending on the purpose of the parameter in the stored procedure. Second, specify the name of the parameter. The parameter name must follow the naming rules of the column name in MySQL. Third, specify the data type and maximum length of the parameter.
How do I call a procedure with parameters in MySQL?This procedure accepts id of the customer as IN parameter and returns product name (String), customer name (String) and, price (int) values as OUT parameters from the sales table. To call the procedure with parameters pass @parameter_name as parameters, in these parameters the output values are stored.
How do you pass a parameter to a procedure?To pass one or more arguments to a procedure
In the calling statement, follow the procedure name with parentheses. Inside the parentheses, put an argument list. Include an argument for each required parameter the procedure defines, and separate the arguments with commas.
Can procedures take parameters?A parameter represents a value that the procedure expects you to supply when you call it. The procedure's declaration defines its parameters. You can define a procedure with no parameters, one parameter, or more than one. The part of the procedure definition that specifies the parameters is called the parameter list.
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