Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/16422#discussion_r126275528
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/SparkSqlParser.scala ---
@@ -320,10 +320,15 @@ class SparkSqlAstBuilder(conf: SQLConf) extends
AstBuilder(conf) {
* Create a [[DescribeTableCommand]] logical plan.
*/
override def visitDescribeTable(ctx: DescribeTableContext): LogicalPlan
= withOrigin(ctx) {
- // Describe column are not supported yet. Return null and let the
parser decide
- // what to do with this (create an exception or pass it on to a
different system).
if (ctx.describeColName != null) {
- null
+ if (ctx.partitionSpec != null) {
+ throw new ParseException("DESC TABLE COLUMN for a specific
partition is not supported", ctx)
+ } else {
+ DescribeColumnCommand(
+ visitTableIdentifier(ctx.tableIdentifier),
+ ctx.describeColName.getText,
+ ctx.FORMATTED != null)
--- End diff --
I think we are fine to keep EXTENDED and FORMATTED the same.
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