Jason Dere created HIVE-20204:
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Summary: Type conversion during IN () comparisons is using
different rules from other comparison operations
Key: HIVE-20204
URL: https://issues.apache.org/jira/browse/HIVE-20204
Project: Hive
Issue Type: Bug
Components: Types
Reporter: Jason Dere
Assignee: Jason Dere
Noticed this while looking at HIVE-20082.
The type conversion done during GenericUDFIn (via
ReturnObjectInspectorResolver) uses FunctionRegistry.getCommonClass(), whereas
the other comparison operators (=, <, >, <=, >=) use
FunctionRegistry.getCommonClassForComparison(). As a result, dec_column IN
('1.1', '2.2') compares the values as strings, whereas dec_column = '1.1' would
compare the values as doubles. This makes a difference for HIVE-20082 since it
is related to changing the 0-padding during decimal-to-string conversions.
cc [~ashutoshc]
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