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https://issues.apache.org/jira/browse/BEAM-6427?focusedWorklogId=185011&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-185011
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ASF GitHub Bot logged work on BEAM-6427:
----------------------------------------
Author: ASF GitHub Bot
Created on: 14/Jan/19 23:13
Start Date: 14/Jan/19 23:13
Worklog Time Spent: 10m
Work Description: amaliujia commented on pull request #7504:
[BEAM-6427]INTERSECT ALL is not compatible with SQL standard.
URL: https://github.com/apache/beam/pull/7504
Per SQL standard 1999 `7.12 3) iii) 3)`,
For ALL case,
```
If INTERSECT is specified, then the number of duplicates of R that T
contains is
the minimum of m and n.
```
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Issue Time Tracking
-------------------
Worklog Id: (was: 185011)
Time Spent: 10m
Remaining Estimate: 0h
> INTERSECT ALL is not compatible with SQL standard
> -------------------------------------------------
>
> Key: BEAM-6427
> URL: https://issues.apache.org/jira/browse/BEAM-6427
> Project: Beam
> Issue Type: Improvement
> Components: dsl-sql
> Reporter: Rui Wang
> Assignee: Rui Wang
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> say Row R appears m times on one side and n times on another side.
> Beam's INTERSECT ALL is implemented to return MAX(m, n).
> And SQL1999 standard says INTERSECT ALL should return MIN(m, n).
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