MySQLStored routines (procedures and functions)


RETURNSSpecifies the data type that can be returned from a function.
RETURNActual variable or value following the RETURN syntax is what is returned to where the function was called from.


A stored routine is either a procedure or a function.

A procedure is invoked using a CALL statement and can only pass back values using output variables.

A function can be called from inside a statement just like any other function and can return a scalar value.