Github user danielvdende commented on a diff in the pull request:
https://github.com/apache/spark/pull/19911#discussion_r155515480
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/jdbc/PostgresDialect.scala ---
@@ -85,6 +85,10 @@ private object PostgresDialect extends JdbcDialect {
s"SELECT 1 FROM $table LIMIT 1"
}
+ override def getTruncateQuery(table: String): String = {
+ s"TRUNCATE ONLY $table"
--- End diff --
Done
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