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Posted to issues@calcite.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2023/05/12 07:03:00 UTC

[jira] [Updated] (CALCITE-5699) Posix regex expressions failed while NOT operator is executed with null literals.

     [ https://issues.apache.org/jira/browse/CALCITE-5699?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated CALCITE-5699:
------------------------------------
    Labels: pull-request-available  (was: )

> Posix regex expressions failed while NOT operator is executed with null literals.
> ---------------------------------------------------------------------------------
>
>                 Key: CALCITE-5699
>                 URL: https://issues.apache.org/jira/browse/CALCITE-5699
>             Project: Calcite
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 1.34.0
>            Reporter: Evgeny Stanilovsky
>            Assignee: Evgeny Stanilovsky
>            Priority: Major
>              Labels: pull-request-available
>
> Operations like :
> {noformat}
> SELECT null !~ 'ab[cd]'
> SELECT 'abcd' !~ null
> SELECT null !~ null
> SELECT null !~* 'ab[cd]'
> SELECT 'abcd' !~* null
> SELECT null !~* null{noformat}
> is not possible for now, NPE is raised :
> {noformat}
> Caused by: java.lang.NullPointerException
>      at java.base/java.util.regex.Matcher.getTextLength(Matcher.java:1770)
>      at java.base/java.util.regex.Matcher.reset(Matcher.java:416)
>      at java.base/java.util.regex.Matcher.<init>(Matcher.java:253)
>      at java.base/java.util.regex.Pattern.matcher(Pattern.java:1134)
>      at org.apache.calcite.runtime.SqlFunctions.posixRegex(SqlFunctions.java:864){noformat}



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