index_object:delete()

object index_object

index_object:delete(key)

Delete a tuple identified by a key.

Same as box.space…delete(), but key is searched in this index instead of in the primary-key index. This index ought to be unique.

Parameters:	index_object (index_object) – an object reference. key (scalar/table) – values to be matched against the index key
Return:	the deleted tuple.
Rtype:	tuple

Note re storage engine: vinyl will return nil, rather than the deleted tuple.