Github user davies commented on a diff in the pull request:
https://github.com/apache/spark/pull/7644#discussion_r35674359
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/DateFunctionsSuite.scala ---
@@ -206,4 +206,43 @@ class DateFunctionsSuite extends QueryTest {
Seq(Row(Date.valueOf("2015-07-30")),
Row(Date.valueOf("2015-07-30"))))
}
+ test("from_unixtime") {
+ val sdf1 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")
+ val fmt2 = "yyyy-MM-dd HH:mm:ss.SSS"
+ val sdf2 = new SimpleDateFormat(fmt2)
+ val fmt3 = "yy-MM-dd HH-mm-ss"
+ val sdf3 = new SimpleDateFormat(fmt3)
+ val df = Seq((1000, "yyyy-MM-dd HH:mm:ss.SSS"), (-1000, "yy-MM-dd
HH-mm-ss")).toDF("a", "b")
+ checkAnswer(
+ df.select(from_unixtime(col("a"))),
+ Seq(Row(sdf1.format(new Timestamp(1000000))), Row(sdf1.format(new
Timestamp(-1000000)))))
+ checkAnswer(
+ df.select(from_unixtime(col("a"), fmt2)),
+ Seq(Row(sdf2.format(new Timestamp(1000000))), Row(sdf2.format(new
Timestamp(-1000000)))))
+ checkAnswer(
+ df.select(from_unixtime(col("a"), fmt3)),
+ Seq(Row(sdf3.format(new Timestamp(1000000))), Row(sdf3.format(new
Timestamp(-1000000)))))
--- End diff --
Could we have a few test cases to test it as a function in SQL (using
selectExpr())?
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