HyukjinKwon commented on a change in pull request #22999: [SPARK-20319][SQL] 
Already quoted identifiers are getting wrapped with additional quotes
URL: https://github.com/apache/spark/pull/22999#discussion_r244299777
 
 

 ##########
 File path: 
sql/core/src/main/scala/org/apache/spark/sql/jdbc/OracleDialect.scala
 ##########
 @@ -81,6 +81,10 @@ private case object OracleDialect extends JdbcDialect {
     case _ => None
   }
 
+  override def quoteIdentifier(colName: String): String = {
+    s""""${colName.stripPrefix("\"").stripSuffix("\"")}""""
 
 Review comment:
   Is it widely used workaround? Manually stripping the quotes looks a bandaid 
fix

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