{"action":"created","issue":{"url":"https://api.github.com/repos/querydsl/querydsl/issues/1121","labels_url":"https://api.github.com/repos/querydsl/querydsl/issues/1121/labels{/name}","comments_url":"https://api.github.com/repos/querydsl/querydsl/issues/1121/comments","events_url":"https://api.github.com/repos/querydsl/querydsl/issues/1121/events","html_url":"https://github.com/querydsl/querydsl/issues/1121","id":54520382,"number":1121,"title":"provide support for relational division","user":{"login":"SebastianDietrich","id":574225,"avatar_url":"https://avatars.githubusercontent.com/u/574225?v=3","gravatar_id":"","url":"https://api.github.com/users/SebastianDietrich","html_url":"https://github.com/SebastianDietrich","followers_url":"https://api.github.com/users/SebastianDietrich/followers","following_url":"https://api.github.com/users/SebastianDietrich/following{/other_user}","gists_url":"https://api.github.com/users/SebastianDietrich/gists{/gist_id}","starred_url":"https://api.github.com/users/SebastianDietrich/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/SebastianDietrich/subscriptions","organizations_url":"https://api.github.com/users/SebastianDietrich/orgs","repos_url":"https://api.github.com/users/SebastianDietrich/repos","events_url":"https://api.github.com/users/SebastianDietrich/events{/privacy}","received_events_url":"https://api.github.com/users/SebastianDietrich/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":1,"created_at":"2015-01-15T23:31:50Z","updated_at":"2015-01-16T08:18:19Z","closed_at":null,"body":"Please provide support for relational division. E.g. like JOOQ supports it (http://www.jooq.org/doc/3.0/manual-single-page/#relational-division).\r\n\r\nEither the \"classical version\" or the \"reduced version\" - http://jise.org/Volume13/Pdf/085.pdf"},"comment":{"url":"https://api.github.com/repos/querydsl/querydsl/issues/comments/70221279","html_url":"https://github.com/querydsl/querydsl/issues/1121#issuecomment-70221279","issue_url":"https://api.github.com/repos/querydsl/querydsl/issues/1121","id":70221279,"user":{"login":"lukaseder","id":734593,"avatar_url":"https://avatars.githubusercontent.com/u/734593?v=3","gravatar_id":"","url":"https://api.github.com/users/lukaseder","html_url":"https://github.com/lukaseder","followers_url":"https://api.github.com/users/lukaseder/followers","following_url":"https://api.github.com/users/lukaseder/following{/other_user}","gists_url":"https://api.github.com/users/lukaseder/gists{/gist_id}","starred_url":"https://api.github.com/users/lukaseder/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/lukaseder/subscriptions","organizations_url":"https://api.github.com/users/lukaseder/orgs","repos_url":"https://api.github.com/users/lukaseder/repos","events_url":"https://api.github.com/users/lukaseder/events{/privacy}","received_events_url":"https://api.github.com/users/lukaseder/received_events","type":"User","site_admin":false},"created_at":"2015-01-16T08:18:19Z","updated_at":"2015-01-16T08:18:19Z","body":"One of the best articles on the subject has been written by Joe Celko whom I need not introduce:\r\nhttps://www.simple-talk.com/sql/t-sql-programming/divided-we-stand-the-sql-of-relational-division\r\n\r\nDivision is hard to get right. A whole chain of SQL transformation capabilities need to be put in place. I wouldn't add this feature without giving the whole transformation tool chain some thorough thought."}}