Changing and Removing Functions : Function « Procedure Function « MySQL Tutorial






  1. MySQL Tutorial
  2. Procedure Function
  3. Function

MySQL provides an ALTER statement for stored functions.

The ALTER statement can change only the characteristics of a function, not the SQL statements that make up the body.

The ALTER statement has the following syntax:

You can change multiple characteristics within a single ALTER statement.

If a characteristic isn't specified in the statement, the value is left as it was when the function was created.

The DETERMINISTIC characteristic isn't allowed in the ALTER statement.

ALTER FUNCTION [database.] ;

ALTER FUNCTION test.myFunction
  COMMENT 'This is the new comment.';








11.3.Function
11.3.1.Creating Functions
11.3.2.A function that takes a parameter, performs an operation using an SQL function, and returns the result
11.3.3.Single statement function
11.3.4.Nested function call
11.3.5.Using buildin function in user-defined function
11.3.6.Changing and Removing Functions
11.3.7.To remove a stored function, use the DROP command
11.3.8.Create a procedure for 'READS SQL DATA'
11.3.9.ALTER PROCEDURE and ALTER FUNCTION Syntax
11.3.10.DROP PROCEDURE and DROP FUNCTION Syntax
11.3.11.Function Permissions