[
https://issues.apache.org/jira/browse/FLINK-9990?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16568963#comment-16568963
]
ASF GitHub Bot commented on FLINK-9990:
---------------------------------------
walterddr commented on a change in pull request #6448: [FLINK-9990] [table] Add
regex_extract supported in TableAPI and SQL
URL: https://github.com/apache/flink/pull/6448#discussion_r207694331
##########
File path:
flink-libraries/flink-table/src/test/scala/org/apache/flink/table/expressions/ScalarFunctionsTest.scala
##########
@@ -450,6 +450,40 @@ class ScalarFunctionsTest extends ScalarTypesTestBase {
"1111111111111111111111111111111111111111111111111111111111111111")
}
+ @Test
+ def testRegexExtract(): Unit = {
Review comment:
Can we add a test specifically doing the backslash escape case. For example:
```
"foothebar".regexExtract("foo([\\w]+"), 1) // should return "thebar"
```
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
> Add regex_extract supported in TableAPI and SQL
> -----------------------------------------------
>
> Key: FLINK-9990
> URL: https://issues.apache.org/jira/browse/FLINK-9990
> Project: Flink
> Issue Type: Sub-task
> Components: Table API & SQL
> Reporter: vinoyang
> Assignee: vinoyang
> Priority: Minor
> Labels: pull-request-available
>
> regex_extract is a very useful function, it returns a string based on a regex
> pattern and a index.
> For example :
> {code:java}
> regexp_extract('foothebar', 'foo(.*?)(bar)', 2) // returns 'bar.'
> {code}
> It is provided as a UDF in Hive, more details please see[1].
> [1]: https://cwiki.apache.org/confluence/display/Hive/LanguageManual+UDF
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
