Github user danielvdende commented on a diff in the pull request:
https://github.com/apache/spark/pull/19911#discussion_r155916550
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/jdbc/JdbcDialects.scala ---
@@ -147,14 +157,6 @@ abstract class JdbcDialect extends Serializable {
case arrayValue: Array[Any] =>
arrayValue.map(compileValue).mkString(", ")
case _ => value
}
-
- /**
- * Return Some[true] iff `TRUNCATE TABLE` causes cascading default.
- * Some[true] : TRUNCATE TABLE causes cascading.
- * Some[false] : TRUNCATE TABLE does not cause cascading.
- * None: The behavior of TRUNCATE TABLE is unknown (default).
- */
- def isCascadingTruncateTable(): Option[Boolean] = None
--- End diff --
Although, custom third party dialects may want it.
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