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Asked 3 years ago
23 Aug 2021
Views 334
Milton

Milton posted

How do you create a function in MySQL?

How do you create a function in MySQL?
ruby-rails

ruby-rails
answered May 1 '23 00:00

user can use the CREATE FUNCTION statement to create a function in MySQL . The basic syntax is as follows:

CREATE FUNCTION function_name(parameter1 datatype, parameter2 datatype, ...) 
RETURNS return_datatype
BEGIN
   -- function body
END;

Here's an example of creating a function that returns the sum of two integers:

CREATE FUNCTION sum_of_two_integers(a INT, b INT)
RETURNS INT
BEGIN
    DECLARE result INT;
    SET result = a + b;
    RETURN result;
END;

In this example, we create a function called sumintegers that takes two integer parameters a and b, and returns the sum of these two integers as an integer value.

Inside the function body, we declare a local variable result, set its value to the sum of a and b, and then return the value of result using the RETURN statement.

Once the function is created, you can call it like any other MySQL function:

SELECT sumintegers(2, 3);

This will return the value 5.
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