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Jesus Camacho Rodriguez updated HIVE-22978: ------------------------------------------- Fix Version/s: 4.0.0 Resolution: Fixed Status: Resolved (was: Patch Available) > Fix decimal precision and scale inference for aggregate rewriting in Calcite > ---------------------------------------------------------------------------- > > Key: HIVE-22978 > URL: https://issues.apache.org/jira/browse/HIVE-22978 > Project: Hive > Issue Type: Bug > Components: CBO > Reporter: Jesus Camacho Rodriguez > Assignee: Jesus Camacho Rodriguez > Priority: Major > Labels: pull-request-available > Fix For: 4.0.0 > > Attachments: HIVE-22978.01.patch, HIVE-22978.02.patch, > HIVE-22978.patch > > Time Spent: 40m > Remaining Estimate: 0h > > Calcite rules can do rewritings of aggregate functions, e.g., {{avg}} into > {{sum/count}}. When type of {{avg}} is decimal, inference of intermediate > precision and scale for the division is not done correctly. The reason is > that we miss support for some types in method {{getDefaultPrecision}} in > {{HiveTypeSystemImpl}}. Additionally, {{deriveSumType}} should be overridden > in {{HiveTypeSystemImpl}} to abide by the Hive semantics for sum aggregate > type inference. -- This message was sent by Atlassian Jira (v8.3.4#803005)