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Posted to issues@spark.apache.org by "Eric Yang (Jira)" <ji...@apache.org> on 2026/07/31 22:04:00 UTC

[jira] [Updated] (SPARK-58443) Wrong results in instr and substring_index for an Int.MinValue position or count

     [ https://issues.apache.org/jira/browse/SPARK-58443?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eric Yang updated SPARK-58443:
------------------------------
    Summary: Wrong results in instr and substring_index for an Int.MinValue position or count  (was:  instr returns a wrong position instead of 0 when start is Int.MinValue due to negation overflow)

> Wrong results in instr and substring_index for an Int.MinValue position or count
> --------------------------------------------------------------------------------
>
>                 Key: SPARK-58443
>                 URL: https://issues.apache.org/jira/browse/SPARK-58443
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 5.0.0
>            Reporter: Eric Yang
>            Priority: Major
>              Labels: pull-request-available
>
> The 3/4-argument instr (SPARK-57436) returns the position of a match instead of 0 (not found) when start is Int.MinValue, which is out of range for any string:
> {code:sql}
> -- returns 4, expected 0 (start is far before the beginning of the string)
> SELECT instr('abcabc', 'abc', -2147483648, 1);
> {code}



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