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From "jiraposter@reviews.apache.org (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-2153) Stats JDBC LIKE queries should escape '_' and '%'
Date Mon, 09 May 2011 23:29:03 GMT

    [ https://issues.apache.org/jira/browse/HIVE-2153?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13030954#comment-13030954
] 

jiraposter@reviews.apache.org commented on HIVE-2153:
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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/702/
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(Updated 2011-05-09 23:25:51.497027)


Review request for hive.


Summary
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Escape '_' and '%' in the LIKE operands. 


This addresses bug HIVE-2153.
    https://issues.apache.org/jira/browse/HIVE-2153


Diffs (updated)
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  trunk/ql/src/java/org/apache/hadoop/hive/ql/exec/Utilities.java 1101220 
  trunk/ql/src/java/org/apache/hadoop/hive/ql/stats/jdbc/JDBCStatsAggregator.java 1101220


Diff: https://reviews.apache.org/r/702/diff


Testing
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passed the stats test suite, also tested it manually on mysql in addition to derby. 


Thanks,

Ning



> Stats JDBC LIKE queries should escape '_' and '%'
> -------------------------------------------------
>
>                 Key: HIVE-2153
>                 URL: https://issues.apache.org/jira/browse/HIVE-2153
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Ning Zhang
>            Assignee: Ning Zhang
>         Attachments: HIVE-2153.2.patch, HIVE-2153.patch
>
>
> DELETE /* Hive stats aggregation: org.apache.hadoop.hive.ql.stats.jdbc.JDBCStatsAggregator
*/ FROM PARTITION_STAT_TBL WHERE ID LIKE 'hdfs://dfsnode:9000/tmp/hive-root/hive_2011-05-09_04-30-28_586_4184342157898880918/-ext-10000/ds=2011-05-08/table_name=dim_page_to_user_suggest_assoc/%'
> It is a prefix query but the '_' in the ID column should be escaped. The same applies
to '%' if they appear in ID. 

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