[jira] [Commented] (HIVE-25230) add position and occurrence to instr()

["Zhihua Deng (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-25230?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17536397#comment-17536397 ] 

Zhihua Deng commented on HIVE-25230:
------------------------------------

Merged into master. Thank you [~stigahuang] for the contribution!

> add position and occurrence to instr()
> --------------------------------------
>
>                 Key: HIVE-25230
>                 URL: https://issues.apache.org/jira/browse/HIVE-25230
>             Project: Hive
>          Issue Type: New Feature
>          Components: UDF
>            Reporter: Quanlong Huang
>            Assignee: Quanlong Huang
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 4.0.0, 4.0.0-alpha-2
>
>          Time Spent: 1h 40m
>  Remaining Estimate: 0h
>
> Current instr() only supports two arguments:
> {code:java}
> instr(str, substr) - Returns the index of the first occurance of substr in str
> {code}
> Other systems (Vertica, Oracle, Impala etc) support additional position and occurrence arguments:
> {code:java}
> instr(str, substr[, pos[, occurrence]])
> {code}
> Oracle doc: [https://docs.oracle.com/database/121/SQLRF/functions089.htm#SQLRF00651]
> It'd be nice to support this as well. Otherwise, it's a SQL difference between Impala and Hive.
>  Impala supports this in IMPALA-3973



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