For some reason, an exists() where clause which is meant to refer to an
outer element is pulling the outer element's table into the query.
What I need is as follows
SELECT anon1.id, anon1.value from (
SELECT DISTINCT ON (pp.id) pp.id AS id, pp.rev_id AS rev_id, pp.deleted
FROM prod as pp
WHERE ((
select max (revision_id) FROM rev1
WHERE exists (
select 1 from prod where pp.id = prod.id
)
) = pp.rev_id and pp.deleted = false
) ORDER BY pp.id, pp.rev_id DESC
) as anon1
The problem is when I create the
exists().where(pp.id == prod.id)
part which renders into
exists (select 1 from prod as prod_1, prod as pp where pp.id = prod_1.id)
which is not the same any more. How can I prevent SQLA from doing so (I
tried from_obj argument, played around with correlate, tried
exists(select), but none of it worked)? Also, it seems in the inner-most
where clause (exist), I actually need an alias to the 2nd select (the
select distinct), which I only get once the query is created. How can I get
this translated to SQLA code?
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