You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@calcite.apache.org by "Zain Humayun (JIRA)" <ji...@apache.org> on 2017/06/20 17:37:00 UTC
[jira] [Created] (CALCITE-1853) Push Count distinct into Druid when
approximate results are acceptable
Zain Humayun created CALCITE-1853:
-------------------------------------
Summary: Push Count distinct into Druid when approximate results are acceptable
Key: CALCITE-1853
URL: https://issues.apache.org/jira/browse/CALCITE-1853
Project: Calcite
Issue Type: Bug
Components: druid
Reporter: Zain Humayun
Assignee: Zain Humayun
Currently queries such as
{code:sql}
select count(distinct "dimension") from "table";
{code}
are not pushed into Druid using the cardinality aggregator because it produces an approximate result. There exists a JDBC string parameter called {{approximateDistinctCount}} introduced in CALCITE-1587 that lets the user specify whether approximate results are acceptable in count distinct queries, however this parameter is not currently utilized by the Druid adapter.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)