For certain orm queries with a 1-to-many relation i want to left outer
join and then update the "on-clause" for that relation. Since the
criteria changes between queries I cannot fix the join criteria when
specifying my object/table mappings.
For example:
tables: user, email
relation: user.emails (1-many)
select *
from user
left outer join email on email.user_id = user.id and email.name
like '%hello%'
While this is easy to write as a one off query in my case I need to be
able to add variable filtering to the join on-clause and in a way that
hopefully works for more complex relations.
So e.g. if I have a query built like this:
query(user).outerjoin((email, emails))
Is there a general way to add to the primary/secondary join criteria
that is pulled from this emails relation? Or is there a better way to
express this in SA that I've missed?
Thanks,
M
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