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https://issues.apache.org/jira/browse/CALCITE-6522?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Caican Cai reassigned CALCITE-6522:
-----------------------------------
Assignee: Caican Cai
> MAP_KEYS and MAP_VALUES function should throw if a key value is null
> ----------------------------------------------------------------------
>
> Key: CALCITE-6522
> URL: https://issues.apache.org/jira/browse/CALCITE-6522
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.37.0
> Reporter: Caican Cai
> Assignee: Caican Cai
> Priority: Major
> Fix For: 1.38.0
>
>
> scala> val df = spark.sql("select map_keys(map(null,0))");
> df: org.apache.spark.sql.DataFrame = [map_keys(map(NULL, 0)): array<void>]
> scala> df.show();
> org.apache.spark.SparkRuntimeException: [NULL_MAP_KEY] Cannot use null as map
> key.
> at
> org.apache.spark.sql.errors.QueryExecutionErrors$.nullAsMapKeyNotAllowedError(QueryExecutionErrors.scala:445)
> at
> org.apache.spark.sql.catalyst.util.ArrayBasedMapBuilder.put(ArrayBasedMapBuilder.scala:56)
> at
> org.apache.spark.sql.catalyst.expressions.CreateMap.eval(complexTypeCreator.scala:248)
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