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https://issues.apache.org/jira/browse/SPARK-7437?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-7437:
-----------------------------------
Assignee: Apache Spark
> Fold "literal in (item1, item2, ..., literal, ...)" into false directly if
> not in.
> ----------------------------------------------------------------------------------
>
> Key: SPARK-7437
> URL: https://issues.apache.org/jira/browse/SPARK-7437
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 1.3.1
> Reporter: Zhongshuai Pei
> Assignee: Apache Spark
>
> Just Fold "literal in (item1, item2, ..., literal, ...)" into true directly
> if in
> {noformat}
> case In(Literal(v, _), list) if list.exists {
> case Literal(candidate, _) if candidate == v => true
> case _ => false
> } => Literal.create(true, BooleanType)
> {noformat}
> Should Fold "literal in (item1, item2, ..., literal, ...)" into true or false
> directly.
> {noformat}
> case In(Literal(v, _), list) =>
> val isExists = list.exists {
> case Literal(candidate, _) if candidate == v => true
> case _ => false
> }
> if (isExists) Literal.create(true, BooleanType) else
> Literal.create(false, BooleanType)
> {noformat}
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