Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/18023#discussion_r117326089
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/parser/AstBuilder.scala
---
@@ -1229,25 +1228,56 @@ class AstBuilder(conf: SQLConf) extends
SqlBaseBaseVisitor[AnyRef] with Logging
CaseWhen(branches, Option(ctx.elseExpression).map(expression))
}
+ def enableHiveSupportQuotedIdentifiers() : Boolean = {
+ SparkEnv.get != null &&
+ SparkEnv.get.conf != null &&
+ SparkEnv.get.conf.getBoolean("hive.support.quoted.identifiers",
false)
--- End diff --
Spark SQL always supports quoted identifiers. However, the missing part is
the `REGEX Column Specification`. How about adding such a conf to `SQLConf`?
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