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https://issues.apache.org/jira/browse/SPARK-22576?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16261313#comment-16261313
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Yuxin Cao commented on SPARK-22576:
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http://infocenter.sybase.com/help/index.jsp?topic=/com.sybase.infocenter.dc38151.1600/doc/html/san1278453073929.html
The character position at which to begin the search in the string. The first
character is position 1. If the starting offset is negative, LOCATE returns the
last matching string offset, rather than the first. A negative offset indicates
how much of the end of the string to exclude from the search. The number of
bytes excluded is calculated as ( -1 * offset ) - 1.
> Spark SQL locate returns incorrect value when the start position is negative
> ----------------------------------------------------------------------------
>
> Key: SPARK-22576
> URL: https://issues.apache.org/jira/browse/SPARK-22576
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.0.0
> Reporter: Yuxin Cao
>
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