Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/16626#discussion_r106786279
--- Diff:
sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/HiveDDLSuite.scala
---
@@ -1860,4 +1861,119 @@ class HiveDDLSuite
}
}
}
+
+ hiveFormats.foreach { tableType =>
+ test(s"alter hive serde table add columns -- partitioned -
$tableType") {
+ withTable("tab") {
+ sql(
+ s"""
+ |CREATE TABLE tab (c1 int, c2 int)
+ |PARTITIONED BY (c3 int) STORED AS $tableType
+ """.stripMargin)
+
+ sql("INSERT INTO tab PARTITION (c3=1) VALUES (1, 2)")
+ sql("ALTER TABLE tab ADD COLUMNS (c4 int)")
+ checkAnswer(
+ sql("SELECT * FROM tab WHERE c3 = 1"),
+ Seq(Row(1, 2, null, 1))
+ )
+ assert(sql("SELECT * FROM tab").schema
+ .contains(StructField("c4", IntegerType)))
+ sql("INSERT INTO tab PARTITION (c3=2) VALUES (2, 3, 4)")
+ checkAnswer(
+ sql("SELECT * FROM tab"),
+ Seq(Row(1, 2, null, 1), Row(2, 3, 4, 2))
+ )
+ checkAnswer(
+ sql("SELECT * FROM tab WHERE c3 = 2 AND c4 IS NOT NULL"),
+ Seq(Row(2, 3, 4, 2))
+ )
+ }
+ }
+ }
+
+ hiveFormats.foreach { tableType =>
+ test(s"alter hive serde table add columns -- with predicate -
$tableType ") {
+ withTable("tab") {
+ sql(s"CREATE TABLE tab (c1 int, c2 int) STORED AS $tableType")
+ sql("INSERT INTO tab VALUES (1, 2)")
+ sql("ALTER TABLE tab ADD COLUMNS (c4 int)")
+ checkAnswer(
+ sql("SELECT * FROM tab WHERE c4 IS NULL"),
+ Seq(Row(1, 2, null))
+ )
+ assert(sql("SELECT * FROM tab").schema
+ .contains(StructField("c4", IntegerType)))
+ sql("INSERT INTO tab VALUES (2, 3, 4)")
+ checkAnswer(
+ sql("SELECT * FROM tab WHERE c4 = 4 "),
+ Seq(Row(2, 3, 4))
+ )
+ checkAnswer(
+ sql("SELECT * FROM tab"),
--- End diff --
`spark.table("tab")`
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