ALTER PROCEDUREproc_name[characteristic...]characteristic: { CONTAINS SQL | NO SQL | READS SQL DATA | MODIFIES SQL DATA } | SQL SECURITY { DEFINER | INVOKER } | COMMENT 'string'
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 DROP
PROCEDURE and CREATE
PROCEDURE.
You must have the ALTER ROUTINE
privilege for the procedure. (That privilege is granted
automatically to the procedure creator.)

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