Github user dongjoon-hyun commented on a diff in the pull request:
https://github.com/apache/spark/pull/20057#discussion_r168883612
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/jdbc/PostgresDialect.scala ---
@@ -89,11 +89,17 @@ private object PostgresDialect extends JdbcDialect {
* The SQL query used to truncate a table. For Postgres, the default
behaviour is to
* also truncate any descendant tables. As this is a (possibly unwanted)
side-effect,
* the Postgres dialect adds 'ONLY' to truncate only the table in question
- * @param table The name of the table.
+ * @param table The table to truncate
+ * @param cascade Whether or not to cascade the truncation. Default value
is the value of
+ * isCascadingTruncateTable()
--- End diff --
ditto.
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