Github user rxin commented on a diff in the pull request: https://github.com/apache/spark/pull/6577#discussion_r31497372 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/jdbc/JdbcDialects.scala --- @@ -80,6 +80,15 @@ abstract class JdbcDialect { * @return The new JdbcType if there is an override for this DataType */ def getJDBCType(dt: DataType): Option[JdbcType] = None + + /** + * Enclose column name + * @param colName The coulmn name + * @return Enclosed column name + */ + def columnEnclosing(colName: String): String = { + colName.split('.').map(c => s""""$c"""").mkString(".") --- End diff -- In what case can we have key.value? I thought it's a column pushed down by spark sql here?
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