Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/18559#discussion_r126066311
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/parser/AstBuilder.scala
---
@@ -751,15 +751,17 @@ class AstBuilder extends SqlBaseBaseVisitor[AnyRef]
with Logging {
* hooks.
*/
override def visitAliasedQuery(ctx: AliasedQueryContext): LogicalPlan =
withOrigin(ctx) {
- // The unaliased subqueries in the FROM clause are disallowed. Instead
of rejecting it in
- // parser rules, we handle it here in order to provide better error
message.
- if (ctx.strictIdentifier == null) {
- throw new ParseException("The unaliased subqueries in the FROM
clause are not supported.",
- ctx)
+ val alias = if (ctx.strictIdentifier == null) {
+ // For un-aliased subqueries, ues a default alias name that is not
likely to conflict with
--- End diff --
nit: typo `ues`.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org
For additional commands, e-mail: reviews-h...@spark.apache.org
