eatoncys commented on a change in pull request #23010: [SPARK-26012][SQL]Null
and '' values should not cause dynamic partition failure of string types
URL: https://github.com/apache/spark/pull/23010#discussion_r248142075
##########
File path:
sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/FileFormatWriterSuite.scala
##########
@@ -44,4 +44,13 @@ class FileFormatWriterSuite extends QueryTest with
SharedSQLContext {
checkAnswer(spark.table("t4"), Row(0, 0))
}
}
+
+ test("Null and '' values should not cause dynamic partition failure of
string types") {
+ withTable("t1", "t2") {
+ spark.range(3).write.saveAsTable("t1")
+ spark.sql("select id, cast(case when id = 1 then '' else null end as
string) as p" +
+ " from t1").write.partitionBy("p").saveAsTable("t2")
+ checkAnswer(spark.table("t2").sort("id"), Seq(Row(0, null), Row(1,
null), Row(2, null)))
+ }
+ }
Review comment:
Sorry, I don't quite understand what w/o CodeGen means. Would you like to
give an example, thanks.
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