[SPARK-37381][SQL] Unify v1 and v2 SHOW CREATE TABLE tests

sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/parser/DDLParserSuite.scala

@@ -1839,19 +1839,6 @@ class DDLParserSuite extends AnalysisTest {
         Some(Map("ds" -> "2017-06-10"))))
   }
 
-  test("SHOW CREATE table") {
-    comparePlans(
-      parsePlan("SHOW CREATE TABLE a.b.c"),
-      ShowCreateTable(
-        UnresolvedTableOrView(Seq("a", "b", "c"), "SHOW CREATE TABLE", allowTempView = false)))
-
-    comparePlans(
-      parsePlan("SHOW CREATE TABLE a.b.c AS SERDE"),
-      ShowCreateTable(
-        UnresolvedTableOrView(Seq("a", "b", "c"), "SHOW CREATE TABLE", allowTempView = false),
-        asSerde = true))
-  }
-
   test("CACHE TABLE") {
     comparePlans(
       parsePlan("CACHE TABLE a.b.c"),

sql/core/src/main/scala/org/apache/spark/sql/execution/command/tables.scala

@@ -1247,7 +1247,7 @@ case class ShowCreateTableAsSerdeCommand(
           s"Unknown table type is found at showCreateHiveTable: $t")
     }
 
-    builder ++= s"CREATE$tableTypeString ${table.quotedString}"
+    builder ++= s"CREATE$tableTypeString ${table.quotedString} "
 
     if (metadata.tableType == VIEW) {
       showCreateView(metadata, builder)

sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/ShowCreateTableExec.scala

@@ -74,7 +74,7 @@ case class ShowCreateTableExec(
       val props = tableOptions.toSeq.sortBy(_._1).map { case (key, value) =>
         s"'${escapeSingleQuotedString(key)}' = '${escapeSingleQuotedString(value)}'"
       }
-      builder ++= "OPTIONS"
+      builder ++= "OPTIONS "
       builder ++= concatByMultiLines(props)
     }
   }

sql/core/src/test/resources/sql-tests/results/group-by.sql.out

@@ -1,5 +1,5 @@
 -- Automatically generated by SQLQueryTestSuite
--- Number of queries: 74
+-- Number of queries: 76
 
 
 -- !query

sql/core/src/test/resources/sql-tests/results/show-create-table.sql.out

@@ -295,7 +295,7 @@ SHOW CREATE TABLE view_SPARK_30302 AS SERDE
 -- !query schema
 struct<createtab_stmt:string>
 -- !query output
-CREATE VIEW `default`.`view_SPARK_30302`(
+CREATE VIEW `default`.`view_SPARK_30302` (
   `aaa`,
   `bbb`)
 AS SELECT a, b FROM tbl
@@ -335,7 +335,7 @@ SHOW CREATE TABLE view_SPARK_30302 AS SERDE
 -- !query schema
 struct<createtab_stmt:string>
 -- !query output
-CREATE VIEW `default`.`view_SPARK_30302`(
+CREATE VIEW `default`.`view_SPARK_30302` (
   `aaa` COMMENT 'comment with \'quoted text\' for aaa',
   `bbb`)
 COMMENT 'This is a comment with \'quoted text\' for view'
@@ -377,7 +377,7 @@ SHOW CREATE TABLE view_SPARK_30302 AS SERDE
 -- !query schema
 struct<createtab_stmt:string>
 -- !query output
-CREATE VIEW `default`.`view_SPARK_30302`(
+CREATE VIEW `default`.`view_SPARK_30302` (
   `aaa`,
   `bbb`)
 TBLPROPERTIES (