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https://issues.apache.org/jira/browse/HIVE-24422?focusedWorklogId=516443&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-516443
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ASF GitHub Bot logged work on HIVE-24422:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 25/Nov/20 02:38
Start Date: 25/Nov/20 02:38
Worklog Time Spent: 10m
Work Description: dengzhhu653 commented on pull request #1702:
URL: https://github.com/apache/hive/pull/1702#issuecomment-733425360
Seems I am wrong. In the trunk, the query
`with game_info as (
select distinct ext_id, dev_app_id, game_name
from game_info_extend )
select count(game_name) from game_info;` , the game_info is firstly
materialized, this can reduce recomputing of game_info no matter how many times
the game_info is referenced later on.
The condition `if (tab == null ||
tab.getDbName().equals(SessionState.get().getCurrentDatabase())) `
in getMetaData will pass as the latter predicate turns out to be true, so the
materialized view is taken other than the table `game_info` for latter use.
@jcamachor, Am I right?
Thanks in advance.
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Issue Time Tracking
-------------------
Worklog Id: (was: 516443)
Time Spent: 20m (was: 10m)
> Throw SemanticException when CTE alias is conflicted with table name
> --------------------------------------------------------------------
>
> Key: HIVE-24422
> URL: https://issues.apache.org/jira/browse/HIVE-24422
> Project: Hive
> Issue Type: Improvement
> Components: Parser
> Reporter: Zhihua Deng
> Assignee: Zhihua Deng
> Priority: Major
> Labels: pull-request-available
> Time Spent: 20m
> Remaining Estimate: 0h
>
> If the alias of CTE is conflicted with the table name, we use the alias
> fetching the table other than replacing it with the ASTNode tree, this may
> cause some confusing problems. For example:
> {noformat}
> create table game_info (game_name string);
> with game_info as (
> select distinct ext_id, dev_app_id, game_name
> from game_info_extend )
> select count(game_name) from game_info;{noformat}
> The query will return the number of rows of the table game_info, instead of
> the game_info_extend. Maybe we should better throw an exception to avoid such
> cases.
>
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