Github user jiangxb1987 commented on a diff in the pull request: https://github.com/apache/spark/pull/20527#discussion_r166853858 --- Diff: sql/core/src/test/scala/org/apache/spark/sql/execution/command/DDLSuite.scala --- @@ -132,6 +134,32 @@ class InMemoryCatalogedDDLSuite extends DDLSuite with SharedSQLContext with Befo checkAnswer(spark.table("t"), Row(Row("a", 1)) :: Nil) } } + + // TODO: This test is copied from HiveDDLSuite, unify it later. + test("SPARK-23348: append data to data source table with saveAsTable") { --- End diff -- Do we also want to cover the following case: ``` 2) Target tables have column metadata ```?
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