def _aliases_from_query(cls, query: Query) -> 'Dict[str, _MapperEntity]':
"""
Get aliases from SQLAlchemy query.
Args:
query: SQLAlchemy query.
Returns:
Dictionary of model aliases.
"""
join_entities = getattr(query, '_join_entities', None)
if join_entities:
aliases = {(mapper._target, mapper.name): mapper.entity
for mapper in join_entities}
else:
aliases = {
(join_entity._target, join_entity.name): join_entity.entity
for join_entity in query._compile_state()._join_entities
}
return aliases
