The null relation handle

SAF_NULL_REL is a macro defined in saf.h.

Synopsis:

SAF_NULL_REL(Db)

Description: This macro evaluates to the relation handle for the null relation of the database. The null relation handle is most often only used in a SAF__ONE parallel call where many processors are participating solely for the sake of collectivity (See *Constants*).

See Also:

• Relations: Introduction for current chapter