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https://issues.apache.org/jira/browse/HIVE-25952?focusedWorklogId=762071&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-762071
]
ASF GitHub Bot logged work on HIVE-25952:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 26/Apr/22 00:20
Start Date: 26/Apr/22 00:20
Worklog Time Spent: 10m
Work Description: github-actions[bot] closed pull request #3024: [WIP]
HIVE-25952 projection get predicates (constant finder instead of hive variant)
URL: https://github.com/apache/hive/pull/3024
Issue Time Tracking
-------------------
Worklog Id: (was: 762071)
Time Spent: 1h 20m (was: 1h 10m)
> Drop HiveRelMdPredicates::getPredicates(Project...) to use that of
> RelMdPredicates
> ----------------------------------------------------------------------------------
>
> Key: HIVE-25952
> URL: https://issues.apache.org/jira/browse/HIVE-25952
> Project: Hive
> Issue Type: Sub-task
> Components: CBO
> Affects Versions: 4.0.0
> Reporter: Alessandro Solimando
> Assignee: Alessandro Solimando
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1h 20m
> Remaining Estimate: 0h
>
> There are some differences on this method between Hive and Calcite, the idea
> of this ticket is to unify the two methods, and then drop the override in
> HiveRelMdPredicates in favour of the method of RelMdPredicates.
> After applying HIVE-25966, the only difference is in the test for constant
> expressions, which can be summarized as follows:
> ||Expression Type|Is Constant for Hive?||Is Constant for Calcite?||
> |InputRef|False|False|
> |Call|True if function is deterministic (arguments are not checked), false
> otherwise|True if function is deterministic and all operands are constants,
> false otherwise|
> |CorrelatedVariable|False|False|
> |LocalRef|False|False|
> |Over|False|False|
> |DymanicParameter|False|True|
> |RangeRef|False|False|
> |FieldAccess|False|Given expr.field, true if expr is constant, false
> otherwise|
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