Stamatis Zampetakis created HIVE-24538:
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Summary: Enforce strict type checks on all operators relying on
comparisons
Key: HIVE-24538
URL: https://issues.apache.org/jira/browse/HIVE-24538
Project: Hive
Issue Type: Task
Components: HiveServer2
Reporter: Stamatis Zampetakis
Assignee: Stamatis Zampetakis
Strict type checks are enforced when {{hive.strict.checks.type.safety}} is
enabled to prevent unexpected query results in some common cases where implicit
type conversions take place.
At the moment these checks are enforced in most comparison based operators
(=,<,>,<=,>=,<>,<=>) but not all. For instance the checks are not active for
BETWEEN and IN operators and possibly others.
The goal of this issue is to review
{{FunctionRegistry#getCommonClassForComparison}} and make sure that operators
relying on comparisons are covered (at a minimum BETWEEN, IN).
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