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https://issues.apache.org/jira/browse/HIVE-23893?focusedWorklogId=492754&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-492754
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ASF GitHub Bot logged work on HIVE-23893:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 30/Sep/20 00:49
Start Date: 30/Sep/20 00:49
Worklog Time Spent: 10m
Work Description: github-actions[bot] commented on pull request #1322:
URL: https://github.com/apache/hive/pull/1322#issuecomment-701095278
This pull request has been automatically marked as stale because it has not
had recent activity. It will be closed if no further activity occurs.
Feel free to reach out on the [email protected] list if the patch is in
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Issue Time Tracking
-------------------
Worklog Id: (was: 492754)
Time Spent: 2h (was: 1h 50m)
> Extract deterministic conditions for pdd when the predicate contains
> non-deterministic function
> -----------------------------------------------------------------------------------------------
>
> Key: HIVE-23893
> URL: https://issues.apache.org/jira/browse/HIVE-23893
> Project: Hive
> Issue Type: Improvement
> Components: Logical Optimizer
> Reporter: Zhihua Deng
> Assignee: zhishui
> Priority: Major
> Labels: pull-request-available
> Time Spent: 2h
> Remaining Estimate: 0h
>
> Taken the following query for example, assume unix_timestamp is
> non-deterministic before version 1.3.0:
>
> {{SELECT}}
> {{ from_unixtime(unix_timestamp(a.first_dt), 'yyyyMMdd') AS ft,}}
> {{ b.game_id AS game_id,}}
> {{ b.game_name AS game_name,}}
> {{ count(DISTINCT a.sha1_imei) uv}}
> {{FROM}}
> {{ gamesdk_userprofile a}}
> {{ JOIN game_info_all b ON a.appid = b.dev_app_id}}
> {{WHERE}}
> {{ a.date = 20200704}}
> {{ AND from_unixtime(unix_timestamp(a.first_dt), 'yyyyMMdd') =
> 20200704}}
> {{ AND b.date = 20200704}}
> {{GROUP BY}}
> {{ from_unixtime(unix_timestamp(a.first_dt), 'yyyyMMdd'),}}
> {{ b.game_id,}}
> {{ b.game_name}}
> {{ORDER BY}}
> {{ uv DESC}}
> {{LIMIT 200;}}
>
> The predicates(a.date = 20200704, b.date = 20200704) are unable to push down
> to join op, make the optimizer unable to prune partitions, which may result
> to a full scan on tables gamesdk_userprofile and game_info_all.
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