I have a "parent-child" relationship and i want to query for update all
children with their parents eager loaded. But that doesn't work as outer joins
are not allowed in "SELECT ..FOR UPDATE" queries in postgresql and eagerload
always produce outer join.
The only solution (and only for most recent revision) i have found is to use
explicit join and contains_eager:
session.query(Child)\
.with_lockmode("update")\
.join("parent") \
.options(contains_eager("parent"))
but it's doesn't look intuitively.
So, do i miss something or eagerload should produce inner join for many-to-one
relationship and if so, is there a chance to be fixed?
--
Yaroslav Boldyrev
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