{"action":"opened","issue":{"url":"https://api.github.com/repos/orientechnologies/orientdb/issues/4071","labels_url":"https://api.github.com/repos/orientechnologies/orientdb/issues/4071/labels{/name}","comments_url":"https://api.github.com/repos/orientechnologies/orientdb/issues/4071/comments","events_url":"https://api.github.com/repos/orientechnologies/orientdb/issues/4071/events","html_url":"https://github.com/orientechnologies/orientdb/issues/4071","id":72934918,"number":4071,"title":"How to remove link relationships between existent classes","user":{"login":"atboo","id":10670291,"avatar_url":"https://avatars.githubusercontent.com/u/10670291?v=3","gravatar_id":"","url":"https://api.github.com/users/atboo","html_url":"https://github.com/atboo","followers_url":"https://api.github.com/users/atboo/followers","following_url":"https://api.github.com/users/atboo/following{/other_user}","gists_url":"https://api.github.com/users/atboo/gists{/gist_id}","starred_url":"https://api.github.com/users/atboo/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/atboo/subscriptions","organizations_url":"https://api.github.com/users/atboo/orgs","repos_url":"https://api.github.com/users/atboo/repos","events_url":"https://api.github.com/users/atboo/events{/privacy}","received_events_url":"https://api.github.com/users/atboo/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-05-04T06:34:37Z","updated_at":"2015-05-04T06:34:37Z","closed_at":null,"body":"I can not do this with any sql statements,could you tell me how to make it?\r\n\r\nThanks"}}