Informix DataBlade API Programmer's Manual DataBlade API Function Descriptions

The mi_func_handlesnulls() function determines whether the user-defined routine associated with a function descriptor can handle SQL NULL values.

mi_integer mi_func_handlesnulls(funcdesc_ptr)

MI_FUNC_DESC *funcdesc_ptr;

funcdesc_ptr

is a pointer to a function descriptor for the user-defined routine to check.

Valid in Client LIBMI Application?	Valid in User-Defined Routine?
No	Yes

The mi_func_handlesnulls() function is one of the functions of the Fastpath interface. It determines whether the associated routine associated with the funcdesc_ptr function descriptor handles SQL NULL values as arguments. Routines that handle NULL arguments have been registered with the HANDLESNULLS routine modifier of the CREATE FUNCTION or CREATE PROCEDURE statement.

See the descriptions of the following functions: mi_cast_get(), mi_func_isvariant(), mi_routine_get(), mi_routine_get_by_typeid(), and mi_td_cast_get().