[jira] [Commented] (SPARK-17647) SQL LIKE does not handle backslashes correctly

["Yin Huai (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-17647?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15553357#comment-15553357 ] 

Yin Huai commented on SPARK-17647:
----------------------------------

[~smilegator] Anyone from your side has time to take a look at it?

> SQL LIKE does not handle backslashes correctly
> ----------------------------------------------
>
>                 Key: SPARK-17647
>                 URL: https://issues.apache.org/jira/browse/SPARK-17647
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>            Reporter: Xiangrui Meng
>              Labels: correctness
>
> Try the following in SQL shell:
> {code}
> select '\\\\' like '%\\%';
> {code}
> It returned false, which is wrong.
> cc: [~yhuai] [~joshrosen]
> A false-negative considered previously:
> {code}
> select '\\\\' rlike '.*\\\\\\\\.*';
> {code}
> It returned true, which is correct if we assume that the pattern is treated as a Java string but not raw string.



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