[ https://issues.apache.org/jira/browse/HIVE-5802?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Xuefu Zhang resolved HIVE-5802. ------------------------------- Resolution: Fixed > Hive UDF pow limits the second input to integer when the first input is a > decimal > --------------------------------------------------------------------------------- > > Key: HIVE-5802 > URL: https://issues.apache.org/jira/browse/HIVE-5802 > Project: Hive > Issue Type: Improvement > Components: Types, UDF > Affects Versions: 0.12.0 > Reporter: Xuefu Zhang > Assignee: Xuefu Zhang > > For example, > {code} > hive> desc test; > OK > i int None > b boolean None > d double None > s string None > dec decimal(5,2) None > hive> explain select pow(dec, 2.5) from test; > FAILED: SemanticException [Error 10014]: Line 1:15 Wrong arguments '2.5': No > matching method for class org.apache.hadoop.hive.ql.udf.UDFPower with > (decimal(5,2), double). Possible choices: _FUNC_(decimal(65,30), int) > _FUNC_(double, double) _FUNC_(double, int) > {code} > This seems too restrictive. MySQL, on the other hand, supports fractional > power as the second input. > {code} > mysql> select pow(d, 2.5) from test; > mysql> desc test; > +-------+--------------+------+-----+---------+-------+ > | Field | Type | Null | Key | Default | Extra | > +-------+--------------+------+-----+---------+-------+ > | i | int(11) | YES | | NULL | | > | b | tinyint(1) | YES | | NULL | | > | d | double | YES | | NULL | | > | s | varchar(5) | YES | | NULL | | > | dd | decimal(5,2) | YES | | NULL | | > +-------+--------------+------+-----+---------+-------+ > 5 rows in set (0.00 sec) > mysql> select pow(dd, 2.5) from test; > +-------------------+ > | pow(dd, 2.5) | > +-------------------+ > | 2570.215713318881 | > +-------------------+ > 1 row in set (0.00 sec) > {code} > Hive should also support this. -- This message was sent by Atlassian JIRA (v6.1#6144)