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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-514) Support functional indexes
Date Tue, 03 Feb 2015 00:03:34 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-514?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14302508#comment-14302508
] 

ASF GitHub Bot commented on PHOENIX-514:
----------------------------------------

Github user JamesRTaylor commented on a diff in the pull request:

    https://github.com/apache/phoenix/pull/34#discussion_r23971463
  
    --- Diff: phoenix-core/src/main/java/org/apache/phoenix/coprocessor/MetaDataEndpointImpl.java
---
    @@ -630,6 +641,13 @@ private PTable getTable(RegionScanner scanner, long clientTimeStamp,
long tableT
                     if (statsHTable != null) statsHTable.close();
                 }
             }
    +        // sort columns by ordinal position
    --- End diff --
    
    This shouldn't be necessary, as PTableImpl does this


> Support functional indexes
> --------------------------
>
>                 Key: PHOENIX-514
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-514
>             Project: Phoenix
>          Issue Type: Task
>            Reporter: James Taylor
>            Assignee: Thomas D'Silva
>              Labels: enhancement
>
> Instead of only defining the set of columns from the data table that make up an index,
you should be able to use expressions.  For example:
>       CREATE INDEX upper_last_name_idx ON person (UPPER(last_name))
> Then in queries that use UPPER(last_name), we can replace them with column references
to the index table.



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