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https://issues.apache.org/jira/browse/SPARK-8255?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Reynold Xin updated SPARK-8255:
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Assignee: Cheng Hao
> string function: regexp_extract
> -------------------------------
>
> Key: SPARK-8255
> URL: https://issues.apache.org/jira/browse/SPARK-8255
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Reporter: Reynold Xin
> Assignee: Cheng Hao
>
> regexp_extract(string subject, string pattern, int index): string
> Returns the string extracted using the pattern. For example,
> regexp_extract('foothebar', 'foo(.*?)(bar)', 2) returns 'bar.' Note that some
> care is necessary in using predefined character classes: using '\s' as the
> second argument will match the letter s; '\\s' is necessary to match
> whitespace, etc. The 'index' parameter is the Java regex Matcher group()
> method index. See docs/api/java/util/regex/Matcher.html for more information
> on the 'index' or Java regex group() method.
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