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https://issues.apache.org/jira/browse/FLINK-34477?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Anderson updated FLINK-34477:
-----------------------------------
Description:
For example, I would expect this query
{code:java}
select REGEXP_REPLACE('ERR1,ERR2', '([^,]+)', 'AA$1AA'); {code}
to produce
{code:java}
AAERR1AA,AAERR2AA{code}
but instead it produces
{code:java}
AA$1AA,AA$1AA{code}
With FLINK-9990 support was added for REGEXP_EXTRACT, which does provide access
to the capture groups, but for many use cases supporting this in the way that
users expect, in REGEXP_REPLACE, would be more natural and convenient.
was:
For example, I would expect this query
{code:java}
select REGEXP_REPLACE('ERR1,ERR2', '([^,]+)', 'AA$1AA'); {code}
to produce
{code:java}
AAERR1AA,AAERR2AA{code}
but instead it produces
{code:java}
AA$1AA,AA$1AA{code}
With FLINK-9990 support was added for REGEXP_EXTRACT, which does provide access
to the capture groups, but for many use cases supporting this in the way that
users expect in REGEXP_REPLACE would be more natural and convenient.
> support capture groups in REGEXP_REPLACE
> ----------------------------------------
>
> Key: FLINK-34477
> URL: https://issues.apache.org/jira/browse/FLINK-34477
> Project: Flink
> Issue Type: Improvement
> Components: Table SQL / API
> Affects Versions: 1.18.1
> Reporter: David Anderson
> Priority: Major
>
> For example, I would expect this query
> {code:java}
> select REGEXP_REPLACE('ERR1,ERR2', '([^,]+)', 'AA$1AA'); {code}
> to produce
> {code:java}
> AAERR1AA,AAERR2AA{code}
> but instead it produces
> {code:java}
> AA$1AA,AA$1AA{code}
> With FLINK-9990 support was added for REGEXP_EXTRACT, which does provide
> access to the capture groups, but for many use cases supporting this in the
> way that users expect, in REGEXP_REPLACE, would be more natural and
> convenient.
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