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Posted to dev@hive.apache.org by "Edward Capriolo (JIRA)" <ji...@apache.org> on 2012/05/26 02:37:23 UTC
[jira] [Commented] (HIVE-556) let hive support theta join
[ https://issues.apache.org/jira/browse/HIVE-556?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13283851#comment-13283851 ]
Edward Capriolo commented on HIVE-556:
--------------------------------------
Min any updates. Come back to us you were doing cool stuff!
> let hive support theta join
> ---------------------------
>
> Key: HIVE-556
> URL: https://issues.apache.org/jira/browse/HIVE-556
> Project: Hive
> Issue Type: New Feature
> Affects Versions: 0.4.0
> Reporter: Min Zhou
>
> Right now , hive only support equal joins . Sometimes it's not enough, we must consider implementing theta joins like
> {code:sql}
> SELECT
> a.subid, a.id, t.url
> FROM
> tbl t JOIN aux_tbl a ON t.url rlike a.url_pattern
> WHERE
> t.dt='20090609'
> AND a.dt='20090609';
> {code}
> any condition expression following 'ON' is appropriate.
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