The ALTER PROCEDURE statement modifies the characteristics of an existing stored procedure, such as its security context or comment, without changing its logic.
This statement can be used to change the characteristics of a stored procedure. More than one change may be specified in an ALTER PROCEDURE statement. However, you cannot change the parameters or body of a stored procedure using this statement. To make such changes, you must drop and re-create the procedure using .
You must have the ALTER ROUTINE privilege for the procedure. By default, that privilege is granted automatically to the procedure creator. See .
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ALTER PROCEDURE proc_name [characteristic ...]
characteristic:
{ CONTAINS SQL | NO SQL | READS SQL DATA | MODIFIES SQL DATA }
| SQL SECURITY { DEFINER | INVOKER }
| COMMENT 'string'ALTER PROCEDURE simpleproc SQL SECURITY INVOKER;