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Ashutosh Chauhan commented on HIVE-13859: ----------------------------------------- +1 > mask() UDF not retaining day and month field values > --------------------------------------------------- > > Key: HIVE-13859 > URL: https://issues.apache.org/jira/browse/HIVE-13859 > Project: Hive > Issue Type: Bug > Components: UDF > Affects Versions: 2.1.0 > Reporter: Madhan Neethiraj > Fix For: 2.1.0 > > Attachments: HIVE-13859.patch > > > For date type parameters, mask() UDF replaces year/month/day field values > with the values given in arguments to the UDF. Argument value -1 is treated > as special, to specify that mask() should retain the value in the parameter. > This allows to selectively mask only year/month/day fields. > Specifying "-1" does not retain the values for day/month fields; however the > year value is retained, as shown below. > {code} > 0: jdbc:hive2://localhost:10000> select id, join_date from employee where id > < 4; > +-----+-------------+--+ > | id | join_date | > +-----+-------------+--+ > | 1 | 2012-01-01 | > | 2 | 2014-02-01 | > | 3 | 2013-03-01 | > +-----+-------------+--+ > 3 rows selected (0.435 seconds) > 0: jdbc:hive2://localhost:10000> select id, mask(join_date, -1, -1, -1, > -1,-1, -1,-1,-1) join_date from employee where id < 4; > +-----+-------------+--+ > | id | join_date | > +-----+-------------+--+ > | 1 | 2012-01-01 | > | 2 | 2014-01-01 | > | 3 | 2013-01-01 | > +-----+-------------+--+ > 3 rows selected (0.344 seconds) > {code} -- This message was sent by Atlassian JIRA (v6.3.4#6332)