LantaoJin commented on a change in pull request #28833:
URL: https://github.com/apache/spark/pull/28833#discussion_r448205714
##########
File path:
sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/HiveDDLSuite.scala
##########
@@ -2309,6 +2309,108 @@ class HiveDDLSuite
}
}
+ test("SPARK-20680: Spark-sql do not support for void column datatype") {
+ withTable("t") {
+ withView("tabVoidType") {
+ val client =
+
spark.sharedState.externalCatalog.unwrapped.asInstanceOf[HiveExternalCatalog].client
+ client.runSqlHive("CREATE TABLE t (t1 int)")
+ client.runSqlHive("INSERT INTO t VALUES (3)")
+ client.runSqlHive("CREATE VIEW tabVoidType AS SELECT NULL AS col FROM
t")
+ checkAnswer(spark.table("tabVoidType"), Row(null))
+ // No exception shows
+ val desc = spark.sql("DESC tabVoidType").collect().toSeq
+ assert(desc.contains(Row("col", "null", null)))
+ }
+ }
+
+ // Forbid CTAS with null type
+ withTable("t1", "t2", "t3") {
+ val e1 = intercept[AnalysisException] {
+ spark.sql("CREATE TABLE t1 USING PARQUET AS SELECT null as null_col")
+ }.getMessage
+ assert(e1.contains("Cannot create tables with VOID type"))
+
+ val e2 = intercept[AnalysisException] {
+ spark.sql("CREATE TABLE t2 AS SELECT null as null_col")
+ }.getMessage
+ assert(e2.contains("Cannot create tables with VOID type"))
+
+ val e3 = intercept[AnalysisException] {
+ spark.sql("CREATE TABLE t3 STORED AS PARQUET AS SELECT null as
null_col")
+ }.getMessage
+ assert(e3.contains("Cannot create tables with VOID type"))
+ }
+
+ // Forbid creating table with void/null type in Spark
+ Seq("void", "null").foreach { colType =>
Review comment:
Symbol "null" is not a data type. `Seq("void", "null").foreach { colType
=>` is incorrect, I have removed it.
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