{"comment":{"url":"https://api.github.com/repos/jacktan1991/smartsql/comments/17171486","html_url":"https://github.com/jacktan1991/smartsql/commit/ea5ff81513b5b01e7bb9631650687f113ab36d34#commitcomment-17171486","id":17171486,"user":{"login":"jacktan1991","id":7688739,"avatar_url":"https://avatars.githubusercontent.com/u/7688739?v=3","gravatar_id":"","url":"https://api.github.com/users/jacktan1991","html_url":"https://github.com/jacktan1991","followers_url":"https://api.github.com/users/jacktan1991/followers","following_url":"https://api.github.com/users/jacktan1991/following{/other_user}","gists_url":"https://api.github.com/users/jacktan1991/gists{/gist_id}","starred_url":"https://api.github.com/users/jacktan1991/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jacktan1991/subscriptions","organizations_url":"https://api.github.com/users/jacktan1991/orgs","repos_url":"https://api.github.com/users/jacktan1991/repos","events_url":"https://api.github.com/users/jacktan1991/events{/privacy}","received_events_url":"https://api.github.com/users/jacktan1991/received_events","type":"User","site_admin":false},"position":316,"line":316,"path":"smartsql.py","commit_id":"ea5ff81513b5b01e7bb9631650687f113ab36d34","created_at":"2016-04-20T03:14:25Z","updated_at":"2016-04-20T03:14:25Z","body":"这里的if-else中，如果传入的参数 `c = ConditionSet()`，那么会出现AND后面跟了一个空字符串"}}