maropu commented on a change in pull request #28953:
URL: https://github.com/apache/spark/pull/28953#discussion_r451334503
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/jdbc/JDBCRDD.scala
##########
@@ -156,6 +164,7 @@ object JDBCRDD extends Logging {
val url = options.url
val dialect = JdbcDialects.get(url)
val quotedColumns = requiredColumns.map(colName =>
dialect.quoteIdentifier(colName))
+
Review comment:
nit: revert the unnecessary change.
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