[GitHub] [spark] LantaoJin commented on a change in pull request #28833: [SPARK-20680][SQL] Spark-sql do not support for void column datatype

LantaoJin commented on a change in pull request #28833: URL: https://github.com/apache/spark/pull/28833#discussion_r440161409 ## File path: sql/catalyst/src/main/scala/org/apache/spark/sql/types/NullType.scala ## @@ -32,6 +32,11 @@ class NullType private() extends DataType {

[GitHub] [spark] LantaoJin commented on a change in pull request #28833: [SPARK-20680][SQL] Spark-sql do not support for void column datatype

LantaoJin commented on a change in pull request #28833: URL: https://github.com/apache/spark/pull/28833#discussion_r440082623 ## File path: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/parser/AstBuilder.scala ## @@ -2211,6 +2211,7 @@ class AstBuilder(conf: