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https://issues.apache.org/jira/browse/SPARK-58798?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yicong Huang reassigned SPARK-58798:
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Assignee: Serge Rielau
> LCT lattice for string family
> -----------------------------
>
> Key: SPARK-58798
> URL: https://issues.apache.org/jira/browse/SPARK-58798
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 5.0.0
> Reporter: Serge Rielau
> Assignee: Serge Rielau
> Priority: Major
> Labels: pull-request-available
>
> tightestCommonString / analyzer: COALESCE, CASE, UNION, IN, etc. LCT(NULL, T)
> = T. Precedence CHAR->VARCHAR->STRING, length max.
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