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https://issues.apache.org/jira/browse/FLINK-9991?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16611851#comment-16611851
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ASF GitHub Bot commented on FLINK-9991:
---------------------------------------
xccui commented on a change in pull request #6450: [FLINK-9991] [table] Add
regexp_replace supported in TableAPI and SQL
URL: https://github.com/apache/flink/pull/6450#discussion_r216951784
##########
File path:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/functions/sql/ScalarSqlFunctions.scala
##########
@@ -187,6 +187,16 @@ object ScalarSqlFunctions {
SqlFunctionCategory.TIMEDATE
)
+ val REGEXP_REPLACE = new SqlFunction(
+ "REGEXP_REPLACE",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.cascade(
+ ReturnTypes.explicit(SqlTypeName.VARCHAR),
SqlTypeTransforms.TO_NULLABLE),
+ InferTypes.RETURN_TYPE,
+ OperandTypes.family(SqlTypeFamily.STRING, SqlTypeFamily.STRING,
SqlTypeFamily.STRING),
Review comment:
Use `OperandTypes.STRING_STRING_STRING` instead.
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> Add regexp_replace supported in TableAPI and SQL
> ------------------------------------------------
>
> Key: FLINK-9991
> URL: https://issues.apache.org/jira/browse/FLINK-9991
> Project: Flink
> Issue Type: Sub-task
> Components: Table API & SQL
> Reporter: vinoyang
> Assignee: vinoyang
> Priority: Minor
> Labels: pull-request-available
>
> regexp_replace is a very userful function to process String.
> For example :
> {code:java}
> regexp_replace("foobar", "oo|ar", "") //returns 'fb.'
> {code}
> It is supported as a UDF in Hive, more details please see[1].
> [1]: https://cwiki.apache.org/confluence/display/Hive/LanguageManual+UDF
>
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