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Navis commented on HIVE-3604: ----------------------------- Currently hive returns true for non-empty string. And for mysql, it does not support casting to boolean type(syntax error). Should it be consistent with mysql? > Casting strings to booleans gives unexpected result > --------------------------------------------------- > > Key: HIVE-3604 > URL: https://issues.apache.org/jira/browse/HIVE-3604 > Project: Hive > Issue Type: Bug > Components: UDF > Affects Versions: 0.8.1 > Environment: Amazon EMR > Reporter: Ariel M > > I would expect the following query to return false in both columns: > select 'false', cast('false' as boolean) from example_table limit 1; > but here are the actual results: > Total MapReduce CPU Time Spent: X seconds X msec > OK > false true -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira