Github user danielvdende commented on a diff in the pull request:
https://github.com/apache/spark/pull/19911#discussion_r155477436
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/jdbc/JdbcDialects.scala ---
@@ -116,6 +116,17 @@ abstract class JdbcDialect extends Serializable {
s"SELECT * FROM $table WHERE 1=0"
}
+ /**
+ * The SQL query that should be used to truncate a table. Dialects can
override this method to
--- End diff --
Fixed
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