attr_stated_ids
attr_stated_ids(
self ,
name: str ,
patch_ids = None,
)-> ‘set[int]’
Return the ids of the patches which state a value for one attr.
An attr may be stored in more than one typed column across an archive, and a patch states it when any of them holds a value. This answers without projecting the relation, so a caller can tell whether it needs to look anywhere else for the rest.