Github user jaceklaskowski commented on a diff in the pull request:
https://github.com/apache/spark/pull/14410#discussion_r73035235
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/test/DataFrameReaderWriterSuite.scala
---
@@ -449,6 +449,22 @@ class DataFrameReaderWriterSuite extends QueryTest
with SharedSQLContext with Be
}
}
+ test("saveAsTable(CTAS) when the source DataFrame is built on a
SimpleCatalog table") {
+ import testImplicits._
+
+ val tableName = "tab1"
+ withTable(tableName) {
+ sql(s"CREATE TABLE $tableName(key int, value int) USING parquet")
+ (1 to 2).map { i => (i, i) }.toDF("key",
"value").write.insertInto(tableName)
+ val df = sql(s"select key, value from $tableName")
+ df.write.mode("append").saveAsTable(tableName)
--- End diff --
What do you think about using `SaveMode.Append` instead?
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