Serge Rielau created SPARK-58798:
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Summary: 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
tightestCommonString / analyzer: COALESCE, CASE, UNION, IN, etc. LCT(NULL, T) =
T. Precedence CHAR->VARCHAR->STRING, length max.
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