I have also asked this question on Stackoverflow and DBA stack exchange with no answer. It's a fairly long post, so I will post a link to it, as on Stackoverflow it is formatted nicely
https://stackoverflow.com/questions/52212878/query-gets-very-slow-when-jsonb-operator-is-used
Any idea why my query slows down so much when I add account.residence_details::jsonb ?& array['city', 'state', 'streetName'] ?