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From "Jason Dere (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-6843) INSTR for UTF-8 returns incorrect position
Date Fri, 18 Apr 2014 08:22:15 GMT

    [ https://issues.apache.org/jira/browse/HIVE-6843?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13973880#comment-13973880
] 

Jason Dere commented on HIVE-6843:
----------------------------------

The string literal does interpret "\uD801" as a single character, and "\uD801\uDC00" as a
single code point (got the example character from http://www.oracle.com/technetwork/articles/javase/supplementary-142654.html):

{noformat}
    String str1 = "123\uD801\uDC00456";
    System.out.println("str1 length=" + str1.length() + ", codePointCount=" + str1.codePointCount(0,
str1.length()));

str1 length=8, codePointCount=7
{noformat}

So if we count things by unicode code points, the "4" would be at index 4 (for 0-based index).


> INSTR for UTF-8 returns incorrect position
> ------------------------------------------
>
>                 Key: HIVE-6843
>                 URL: https://issues.apache.org/jira/browse/HIVE-6843
>             Project: Hive
>          Issue Type: Bug
>          Components: UDF
>    Affects Versions: 0.11.0, 0.12.0
>            Reporter: Clif Kranish
>            Assignee: Szehon Ho
>            Priority: Minor
>         Attachments: HIVE-6843.patch
>
>




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