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https://issues.apache.org/jira/browse/HIVE-4070?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13668559#comment-13668559
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Eric Hanson commented on HIVE-4070:
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There's an effort to add vectorized query execution to Hive, and this JIRA is
to speed up the most common cases for LIKE in vectorized mode:
https://issues.apache.org/jira/browse/HIVE-4548.
Making the performance as fast as in the HIVE-4548 JIRA will not be possible if
LIKE is case-insensitive. That makes things quite a bit harder. So I am glad
the sentiment here is to keep the default behavior case-sensitive.
> Like operator in Hive is case sensitive while in MySQL (and most likely other
> DBs) it's case insensitive
> --------------------------------------------------------------------------------------------------------
>
> Key: HIVE-4070
> URL: https://issues.apache.org/jira/browse/HIVE-4070
> Project: Hive
> Issue Type: Bug
> Components: UDF
> Affects Versions: 0.10.0
> Reporter: Mark Grover
> Assignee: Mark Grover
> Priority: Trivial
>
> Hive's like operator seems to be case sensitive.
> See
> https://github.com/apache/hive/blob/trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/UDFLike.java#L164
> However, MySQL's like operator is case insensitive. I don't have other DB's
> (like PostgreSQL) installed and handy but I am guessing their LIKE is case
> insensitive as well.
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