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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2015/07/17 15:10:05 UTC
[jira] [Assigned] (SPARK-8255) string function: regexp_extract
[ https://issues.apache.org/jira/browse/SPARK-8255?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Apache Spark reassigned SPARK-8255:
-----------------------------------
Assignee: Apache Spark (was: 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: Apache Spark
>
> 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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