Github user yhuai commented on a diff in the pull request:
https://github.com/apache/spark/pull/13013#discussion_r62740941
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/DataFrameWriter.scala ---
@@ -351,6 +351,9 @@ final class DataFrameWriter private[sql](df: DataFrame)
{
* Inserts the content of the [[DataFrame]] to the specified table. It
requires that
* the schema of the [[DataFrame]] is the same as the schema of the
table.
*
+ * Note: Unlike `saveAsTable`, `insertInto` ignores the column names. If
the column order or names
+ * doesn't match the table's, you may get unexpected results.
--- End diff --
Have an example at here as well?
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