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https://issues.apache.org/jira/browse/BEAM-6810?focusedWorklogId=212069&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-212069
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ASF GitHub Bot logged work on BEAM-6810:
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Author: ASF GitHub Bot
Created on: 12/Mar/19 21:35
Start Date: 12/Mar/19 21:35
Worklog Time Spent: 10m
Work Description: kanterov commented on pull request #8035: [BEAM-6810]
Disable CalcRemoveRule to fix trivial projections
URL: https://github.com/apache/beam/pull/8035
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Issue Time Tracking
-------------------
Worklog Id: (was: 212069)
Time Spent: 50m (was: 40m)
> [SQL] Plan optimizer eliminates aliasing in trivial projections
> ---------------------------------------------------------------
>
> Key: BEAM-6810
> URL: https://issues.apache.org/jira/browse/BEAM-6810
> Project: Beam
> Issue Type: Bug
> Components: dsl-sql
> Affects Versions: 2.11.0
> Reporter: Gleb Kanterov
> Assignee: Gleb Kanterov
> Priority: Major
> Fix For: 2.12.0
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> Trivial programs project precisely their input fields, without dropping or
> re-ordering them. The simplest example is:
> {code}
> SELECT * FROM PCOLLECTION
> {code}
> Given input PCollection with a schema `c_int64: BIGINT` following query
> should result in PCollection with a schema `abc: BIGINT`, however, due to a
> bug in query optimization, it results in `c_int64: BIGINT`
> {code}
> SELECT c_int64 as abc FROM PCOLLECTION
> {code}
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