[ https://issues.apache.org/jira/browse/HIVE-364?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Carl Steinbach updated HIVE-364: -------------------------------- Component/s: (was: Serializers/Deserializers) Query Processor > Hive Operators should calculate the value of common expressions just once > ------------------------------------------------------------------------- > > Key: HIVE-364 > URL: https://issues.apache.org/jira/browse/HIVE-364 > Project: Hive > Issue Type: Improvement > Components: Query Processor > Reporter: Zheng Shao > > Currently, if we have "t.a + t.b" in 2 different expressions in the select > clause / where clause, we are computing it twice. > We should cache the value of the expression evaluation result to save CPU > time. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira