[SPARK-3531][SQL]select null from table would throw a MatchError

Author: Daoyuan Wang <daoyuan.wang@intel.com>

Closes #2396 from adrian-wang/selectnull and squashes the following commits:

2458229 [Daoyuan Wang] rebase solution

sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveMetastoreCatalog.scala

@@ -244,6 +244,7 @@ object HiveMetastoreTypes extends RegexParsers {
     case BooleanType => "boolean"
     case DecimalType => "decimal"
     case TimestampType => "timestamp"
+    case NullType => "void"
   }
 }
 

sql/hive/src/test/resources/golden/select null from table-0-5bb53cca754cc8afe9cd22feb8c586d1

+NULL

sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/HiveQuerySuite.scala

@@ -330,6 +330,9 @@ class HiveQuerySuite extends HiveComparisonTest {
   createQueryTest("timestamp cast #8",
     "SELECT CAST(CAST(-1.2 AS TIMESTAMP) AS DOUBLE) FROM src LIMIT 1")
 
+  createQueryTest("select null from table",
+    "SELECT null FROM src LIMIT 1")
+
   test("implement identity function using case statement") {
     val actual = sql("SELECT (CASE key WHEN key THEN key END) FROM src")
       .map { case Row(i: Int) => i }