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[SPARK-3363][SQL] Type Coercion should promote null to all other types.
Type Coercion should support every type to have null value Author: Daoyuan Wang <daoyuan.wang@intel.com> Author: Michael Armbrust <michael@databricks.com> Closes #2246 from adrian-wang/spark3363-0 and squashes the following commits: c6241de [Daoyuan Wang] minor code clean 595b417 [Daoyuan Wang] Merge pull request #2 from marmbrus/pr/2246 832e640 [Michael Armbrust] reduce code duplication ef6f986 [Daoyuan Wang] make double boolean miss in jsonRDD compatibleType c619f0a [Daoyuan Wang] Type Coercion should support every type to have null value
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- sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/HiveTypeCoercion.scala 21 additions, 17 deletions...apache/spark/sql/catalyst/analysis/HiveTypeCoercion.scala
- sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/analysis/HiveTypeCoercionSuite.scala 24 additions, 8 deletions...e/spark/sql/catalyst/analysis/HiveTypeCoercionSuite.scala
- sql/core/src/main/scala/org/apache/spark/sql/json/JsonRDD.scala 22 additions, 29 deletions...re/src/main/scala/org/apache/spark/sql/json/JsonRDD.scala
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