"Too many tables" SQL error because of the way selector generates SQL

[artfulrobot]

I have a selector like this: "template=job, job_id!=1|2|3|..." The purpose is to find all job pages except for those given in the OR list.

I'd expect SQL like this:

SELECT pages.id,pages.templates_id
FROM `pages`
LEFT JOIN field_job_id ON pages_id=pages.id  
WHERE (pages.templates_id=123)
AND field_job_id NOT IN (1,2,3,4,...);

However the PW query builder seems to generate something far more complex, including adding a JOIN for every id!=1|2|3|... value - this tips over Mysql's joins limit (61 in MariaDB at least) and causes a crash.

I've had to work around this by instead of using selectors, loop every job page in PHP and test it's job_id field against the set I want to exclude, which is really inefficient.

Is there a way to make the selector → SQL more efficient/not crashy?