Github user rick-ibm commented on a diff in the pull request: https://github.com/apache/spark/pull/8982#discussion_r41649928 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/jdbc/JdbcDialects.scala --- @@ -287,3 +288,30 @@ case object MsSqlServerDialect extends JdbcDialect { case _ => None } } + +/** + * :: DeveloperApi :: + * Default Apache Derby dialect, mapping real on read + * and string/byte/short/boolean/decimal on write. + */ +@DeveloperApi +case object DerbyDialect extends JdbcDialect { + override def canHandle(url: String): Boolean = url.startsWith("jdbc:derby") + override def getCatalystType( + sqlType: Int, typeName: String, size: Int, md: MetadataBuilder): Option[DataType] = { + if (sqlType == Types.REAL) Some(FloatType) else None --- End diff -- Thanks for the review comments, Reynold and Michael. Hopefully, my last commit (e6022ed) addresses your concerns: o I adjusted the indentation of a method signature, per Reynold's advice. o I simplified an "if" expression, also per Reynold's advice. However, I have a question about this change (see my comment above on the line in question). Thanks, -Rick
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