[ https://issues.apache.org/jira/browse/IMPALA-7759?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Work on IMPALA-7759 started by Greg Rahn. ----------------------------------------- > Add Levenshtein edit distance built-in function > ----------------------------------------------- > > Key: IMPALA-7759 > URL: https://issues.apache.org/jira/browse/IMPALA-7759 > Project: IMPALA > Issue Type: New Feature > Reporter: Greg Rahn > Assignee: Greg Rahn > Priority: Major > Labels: built-in-function > > References: > * [Netezza - > le_dst()|https://www.ibm.com/support/knowledgecenter/en/SSULQD_7.2.1/com.ibm.nz.dbu.doc/r_dbuser_functions_expressions_fuzzy_funcs.html] > * [Postgres - > levenshtein()|https://www.postgresql.org/docs/current/static/fuzzystrmatch.html#id-1.11.7.24.6] > One notable difference: > * Netezza: if either value is NULL, returns the length of non-NULL value > * Postgres: if either value is NULL, returns NULL > Preference is to implement Postgres version due to ease of cross-system > testing. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-all-unsubscr...@impala.apache.org For additional commands, e-mail: issues-all-h...@impala.apache.org