[
https://issues.apache.org/jira/browse/BEAM-7070?focusedWorklogId=227210&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-227210
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ASF GitHub Bot logged work on BEAM-7070:
----------------------------------------
Author: ASF GitHub Bot
Created on: 13/Apr/19 17:49
Start Date: 13/Apr/19 17:49
Worklog Time Spent: 10m
Work Description: amaliujia commented on pull request #8301: [BEAM-7070]
JOIN condition should accept field access
URL: https://github.com/apache/beam/pull/8301
Currently BeamSQL's join rel implementation has limitations:
1. only deal with InputColumnRef and direct cast to InputColumnRef without
checking.
2. only check if join condition is `() AND () AND ...`
3. treat non equal operator (e.g. <) as equal operator (e.g. =)
and more
It's a big effort to improve join rel to make it work properly in every
cases. In BeamSQL, there is a also a lack enough test cases and test utils.
This PR tries to kick off the party and
1. make JOIN condition work on field access.
2. reject unsupported RexNode by an exception.
This PR is only a start work and an attempt to generalize join rel.
The immediate work after this PR is
https://jira.apache.org/jira/browse/BEAM-7071, which will be in another PR.
------------------------
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Issue Time Tracking
-------------------
Worklog Id: (was: 227210)
Time Spent: 10m
Remaining Estimate: 0h
> JOIN condition should accept field access
> -----------------------------------------
>
> Key: BEAM-7070
> URL: https://issues.apache.org/jira/browse/BEAM-7070
> Project: Beam
> Issue Type: Improvement
> Components: dsl-sql
> Reporter: Rui Wang
> Assignee: Rui Wang
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
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