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Posted to issues-all@impala.apache.org by "Alex Rodoni (JIRA)" <ji...@apache.org> on 2018/07/12 19:11:00 UTC
[jira] [Commented] (IMPALA-7291) [DOCS] Document recommendation to
use VARCHAR or STRING instead of CHAR(N)
[ https://issues.apache.org/jira/browse/IMPALA-7291?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16542111#comment-16542111 ]
Alex Rodoni commented on IMPALA-7291:
-------------------------------------
[~jeszyb] What are the gains of codegen I should note?
> [DOCS] Document recommendation to use VARCHAR or STRING instead of CHAR(N)
> --------------------------------------------------------------------------
>
> Key: IMPALA-7291
> URL: https://issues.apache.org/jira/browse/IMPALA-7291
> Project: IMPALA
> Issue Type: Improvement
> Components: Docs
> Affects Versions: Impala 2.12.0
> Reporter: Balazs Jeszenszky
> Assignee: Alex Rodoni
> Priority: Major
>
> CHAR(N) currently does not have codegen support. For that reason, we should recommend customers to use VARCHAR or STRING instead - the gain of codegen outweighs the benefits of fixed width CHARs.
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