Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/17874#discussion_r115136069
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
---
@@ -1023,8 +1023,6 @@ class Analyzer(
* clause. This rule detects such queries and adds the required
attributes to the original
* projection, so that they will be available during sorting. Another
projection is added to
* remove these attributes after sorting.
- *
- * The HAVING clause could also used a grouping columns that is not
presented in the SELECT.
--- End diff --
> This is by design.
For the HAVING clause could also used a grouping columns that is not
presented in the SELECT, yes.
For other general cases, I doubt it.
We have other rule doing this. That is why the tests are passed after this
rule is removed. The above query also works without this rule.
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