Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/18266#discussion_r137720118
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/DataFrameReader.scala ---
@@ -679,6 +679,16 @@ class DataFrameReader private[sql](sparkSession:
SparkSession) extends Logging {
}
/**
+ * A convenient function for validate specified column types schema in
jdbc API.
+ */
+ private def assertJdbcAPISpecifiedDataFrameSchema(): Unit = {
--- End diff --
`assertJdbcAPISpecifiedDataFrameSchema` -> `assertNoSpecifiedSchemaForJDBC`
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