[ https://issues.apache.org/jira/browse/HIVE-512?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Min Zhou updated HIVE-512: -------------------------- Attachment: HIVE-512.patch patch w/o unit test. the api of GenericUDF leaded something inconvenient to custom an GenericUDF. I've commentted those inconvenience in my patch. > [GenericUDF] new string function ELT(N,str1,str2,str3,...) > ----------------------------------------------------------- > > Key: HIVE-512 > URL: https://issues.apache.org/jira/browse/HIVE-512 > Project: Hadoop Hive > Issue Type: New Feature > Components: Query Processor > Affects Versions: 0.4.0 > Reporter: Min Zhou > Assignee: Min Zhou > Fix For: 0.4.0 > > Attachments: HIVE-512.patch > > > ELT(N,str1,str2,str3,...) > Returns str1 if N = 1, str2 if N = 2, and so on. Returns NULL if N is less > than 1 or greater than the number of arguments. ELT() is the complement of > FIELD(). > {noformat} > mysql> SELECT ELT(1, 'ej', 'Heja', 'hej', 'foo'); > -> 'ej' > mysql> SELECT ELT(4, 'ej', 'Heja', 'hej', 'foo'); > -> 'foo' > {noformat} -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.