You are viewing a plain text version of this content. The canonical link for it is here.

Posted to dev@phoenix.apache.org by "Lars Hofhansl (JIRA)" <ji...@apache.org> on 2016/05/27 21:11:12 UTC

[jira] [Assigned] (PHOENIX-258) Use skip scan when SELECT DISTINCT on leading row key column(s)

     [ https://issues.apache.org/jira/browse/PHOENIX-258?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lars Hofhansl reassigned PHOENIX-258:
-------------------------------------

    Assignee: Lars Hofhansl

> Use skip scan when SELECT DISTINCT on leading row key column(s)
> ---------------------------------------------------------------
>
>                 Key: PHOENIX-258
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-258
>             Project: Phoenix
>          Issue Type: Task
>            Reporter: ryang-sfdc
>            Assignee: Lars Hofhansl
>              Labels: gsoc2016
>             Fix For: 4.8.0
>
>         Attachments: 258-WIP.txt, 258-v1.txt, 258-v2.txt, 258-v3.txt, 258-v4.txt, 258.txt, DistinctFixedPrefixFilter.java, in-clause.png
>
>
> create table(a varchar(32) not null, date date not null constraint pk primary key(a,date))
> [["PLAN"],["CLIENT PARALLEL 94-WAY FULL SCAN OVER foo"],["    SERVER AGGREGATE INTO ORDERED DISTINCT ROWS BY [a]"],["CLIENT MERGE SORT"]]             
> We should skip scan.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)