Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/16626#discussion_r97212553
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/SparkSqlParser.scala ---
@@ -736,6 +736,22 @@ class SparkSqlAstBuilder(conf: SQLConf) extends
AstBuilder {
}
/**
+ * Create a [[AlterTableAddColumnsCommand]] command.
+ *
+ * For example:
+ * {{{
+ * ALTER TABLE table1
+ * ADD COLUMNS (col_name data_type [COMMENT col_comment], ...);
+ * }}}
+ */
+ override def visitAddTableColumns(ctx: AddTableColumnsContext):
LogicalPlan = withOrigin(ctx) {
+ AlterTableAddColumnsCommand(
+ visitTableIdentifier(ctx.tableIdentifier),
+ Option(ctx.columns).map(visitColTypeList).getOrElse(Nil)
--- End diff --
columns are not optimal for this case.
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