Github user yhuai commented on a diff in the pull request:
https://github.com/apache/spark/pull/3431#discussion_r22619369
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/sources/ddl.scala ---
@@ -67,15 +89,25 @@ private[sql] class DDLParser extends
StandardTokenParsers with PackratParsers wi
protected lazy val ddl: Parser[LogicalPlan] = createTable
/**
- * CREATE TEMPORARY TABLE avroTable
+ * `CREATE TEMPORARY TABLE avroTable
* USING org.apache.spark.sql.avro
- * OPTIONS (path "../hive/src/test/resources/data/files/episodes.avro")
+ * OPTIONS (path "../hive/src/test/resources/data/files/episodes.avro")`
+ * or
+ * `CREATE TEMPORARY TABLE avroTable(intField int, stringField string...)
+ * USING org.apache.spark.sql.avro
+ * OPTIONS (path "../hive/src/test/resources/data/files/episodes.avro")`
*/
protected lazy val createTable: Parser[LogicalPlan] =
- CREATE ~ TEMPORARY ~ TABLE ~> ident ~ (USING ~> className) ~ (OPTIONS
~> options) ^^ {
- case tableName ~ provider ~ opts =>
- CreateTableUsing(tableName, provider, opts)
+ (
+ CREATE ~ TEMPORARY ~ TABLE ~> ident
+ ~ (tableCols).? ~ (USING ~> className) ~ (OPTIONS ~> options) ^^ {
+ case tableName ~ columns ~ provider ~ opts =>
+ val tblColumns = if(columns.isEmpty) Seq.empty else columns.get
--- End diff --
I feel it is better to use the `Option` instead of converting a `None` to
an empty `Seq`.
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