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https://issues.apache.org/jira/browse/CALCITE-2242?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16430398#comment-16430398
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Julian Hyde commented on CALCITE-2242:
--------------------------------------
Why does testFilterRemoveIsNotDistinctFromRuLe have so much code? It looks like
there’s a lot of copy-pasted boilerplate.
> Using custom RelBuilder for FilterRemoveIsNotDistinctFromRule
> -------------------------------------------------------------
>
> Key: CALCITE-2242
> URL: https://issues.apache.org/jira/browse/CALCITE-2242
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.16.0
> Reporter: Vitalii Diravka
> Assignee: Vitalii Diravka
> Priority: Major
> Fix For: 1.17.0
>
>
> FilterRemoveIsNotDistinctFromRule doesn't leverage custom RelBuilder.
> There is no test case for this rule.
> {code}
> LogicalFilter(condition=[IS NOT DISTINCT FROM($7, 20)])
> LogicalTableScan(table=[[scott, EMP]])
> {code}
> -->
> {code}
> LogicalFilter(condition=[CASE(IS NULL($7), IS NULL(20), =(CAST($7):TINYINT
> NOT NULL, 20))])
> LogicalTableScan(table=[[scott, EMP]])
> {code}
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