Returns TRUE if two compared objects are equivalent, FALSE otherwise.
«Object 1» IS «Object 2»
Returns TRUE if the two tuples or members specified in «Object 1» and «Object 2» are equivalent, FALSE otherwise.
«Object 1» IS NULL
Returns TRUE if the level, tuple, or member specified in «Object 1» is NULL, FALSE otherwise.
The Is function is typically used for tuples and members to determine whether the objects are idempotent.
The following example returns FALSE:
Time.[1996] IS NULL