[
https://issues.apache.org/jira/browse/DRILL-6968?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16746632#comment-16746632
]
Kunal Khatua commented on DRILL-6968:
-------------------------------------
[~benj641] this could be implemented as a UDF. Do you want to give it a try?
[~cgivre] and [~paul-rogers] have a book recently published that touches upon
writing UDFs in reasonable amount of detail and can help on the dev mailing
list as well.
> pattern matching and regexp facilities
> --------------------------------------
>
> Key: DRILL-6968
> URL: https://issues.apache.org/jira/browse/DRILL-6968
> Project: Apache Drill
> Issue Type: Wish
> Components: Functions - Drill
> Affects Versions: 1.15.0
> Reporter: benj
> Priority: Major
>
> Although it is possible to do some of them self, adding some possibilities
> from pattern matching directly in DRILL
> * may be usefull,
> * would prevent (re)write them and check again and again,
> * would allow a quicker and more effective handling of Drill.
> Some propositions :
> * adding possibilities to regexp_replace (ignoreCase,
> replaceAll(currently)/replaceOnlyFirst ...)
> * regexp_matches (lighter and more consistent than using regexp_replace
> trick)
> * split_to_table
> {noformat}
> SELECT split_to_table('Drill,baby,drill',',') AS mywords, 1 AS x;
> +---------+---+
> | mywords | x |
> +---------+---+
> | Drill | 1 |
> | baby | 1 |
> | drill | 1 |
> +---------+---+
> {noformat}
> * split_to_array
> {noformat}
> SELECT split_to_array('Drill,baby,drill',',') AS mywords, 1 AS x;
> +---------------------------+---+
> | mywords | x |
> +---------------------------+---+
> | ["Drill","baby","drill"] | 1 |
> +---------------------------+---+
> {noformat}
> * ...
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
