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https://issues.apache.org/jira/browse/IMPALA-8709?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tim Armstrong resolved IMPALA-8709.
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Resolution: Fixed
> Add Damerau-Levenshtein edit distance built-in function
> -------------------------------------------------------
>
> Key: IMPALA-8709
> URL: https://issues.apache.org/jira/browse/IMPALA-8709
> Project: IMPALA
> Issue Type: New Feature
> Reporter: Greg Rahn
> Assignee: Greg Rahn
> Priority: Major
> Labels: built-in-function
> Fix For: Impala 3.4.0
>
>
> Algo (restricted DL / optimal string alignment)
> [https://en.wikipedia.org/wiki/Damerau%E2%80%93Levenshtein_distance]
> References:
>
> [https://www.ibm.com/support/knowledgecenter/en/SSULQD_7.2.1/com.ibm.nz.dbu.doc/r_dbuser_functions_expressions_fuzzy_funcs.html]
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