Github user hvanhovell commented on a diff in the pull request:
https://github.com/apache/spark/pull/12460#discussion_r60186589
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/SparkSqlParser.scala ---
@@ -254,6 +251,21 @@ class SparkSqlAstBuilder extends AstBuilder {
}
}
+ /**
+ * A column path can be specified as an parameter to describe command.
It is a dot separated
+ * elements where the last element can be a String.
+ * TODO - check with Herman
--- End diff --
Ok, lets remove this from the grammar as well, and just use a dot separated
list of identifiers. Actually, are we currently able to deal with nested
columns?
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