[jira] [Resolved] (ASTERIXDB-2442) substring() should return NULL if starting offset is out of bounds or length is negative

[Dmitry Lychagin (JIRA)]

     [ 
https://issues.apache.org/jira/browse/ASTERIXDB-2442?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Dmitry Lychagin resolved ASTERIXDB-2442.
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    Resolution: Fixed

> substring() should return NULL if starting offset is out of bounds or length 
> is negative
> ----------------------------------------------------------------------------------------
>
>                 Key: ASTERIXDB-2442
>                 URL: https://issues.apache.org/jira/browse/ASTERIXDB-2442
>             Project: Apache AsterixDB
>          Issue Type: Improvement
>            Reporter: Dmitry Lychagin
>            Assignee: Dmitry Lychagin
>            Priority: Minor
>
> substring() should return NULL in the following cases:
> 1) if starting offset is out of bounds for given string, including the case 
> when the starting offset is negative and therefore counted backwards from the 
> length of the string.
> 2) if length is negative



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