{"action":"opened","issue":{"url":"https://api.github.com/repos/greenplum-db/gpdb/issues/666","repository_url":"https://api.github.com/repos/greenplum-db/gpdb","labels_url":"https://api.github.com/repos/greenplum-db/gpdb/issues/666/labels{/name}","comments_url":"https://api.github.com/repos/greenplum-db/gpdb/issues/666/comments","events_url":"https://api.github.com/repos/greenplum-db/gpdb/issues/666/events","html_url":"https://github.com/greenplum-db/gpdb/issues/666","id":150242971,"number":666,"title":"Question about index and partition","user":{"login":"wangcheng233","id":3355822,"avatar_url":"https://avatars.githubusercontent.com/u/3355822?v=3","gravatar_id":"","url":"https://api.github.com/users/wangcheng233","html_url":"https://github.com/wangcheng233","followers_url":"https://api.github.com/users/wangcheng233/followers","following_url":"https://api.github.com/users/wangcheng233/following{/other_user}","gists_url":"https://api.github.com/users/wangcheng233/gists{/gist_id}","starred_url":"https://api.github.com/users/wangcheng233/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/wangcheng233/subscriptions","organizations_url":"https://api.github.com/users/wangcheng233/orgs","repos_url":"https://api.github.com/users/wangcheng233/repos","events_url":"https://api.github.com/users/wangcheng233/events{/privacy}","received_events_url":"https://api.github.com/users/wangcheng233/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2016-04-22T01:59:21Z","updated_at":"2016-04-22T01:59:21Z","closed_at":null,"body":"Hello.\r\nI create an table named tb in my Greenplum database, it has 100 partitions. when I create index on tb, GP creates index on each partition automatically. I insert about 300GB data into the table.\r\nhere is the question:\r\nthe index on each partition doesn't work. It is Seq Scan on all partitions when I query the table.\r\n\r\nhow can I use the index?\r\n"}}