Github user anabranch commented on a diff in the pull request:
https://github.com/apache/spark/pull/16138#discussion_r90788929
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/DateFunctionsSuite.scala ---
@@ -351,34 +351,81 @@ class DateFunctionsSuite extends QueryTest with
SharedSQLContext {
Seq(Row(Date.valueOf("2015-07-30")),
Row(Date.valueOf("2015-07-30"))))
}
+
+// test("function to_timestamp") {
+//
+// }
+
test("function to_date") {
val d1 = Date.valueOf("2015-07-22")
val d2 = Date.valueOf("2015-07-01")
+ val d3 = Date.valueOf("2014-12-31")
val t1 = Timestamp.valueOf("2015-07-22 10:00:00")
val t2 = Timestamp.valueOf("2014-12-31 23:59:59")
+ val t3 = Timestamp.valueOf("2014-12-31 23:59:59")
val s1 = "2015-07-22 10:00:00"
val s2 = "2014-12-31"
- val df = Seq((d1, t1, s1), (d2, t2, s2)).toDF("d", "t", "s")
+ val s3 = "2014-31-12"
+ val df = Seq((d1, t1, s1), (d2, t2, s2), (d3, t3, s3)).toDF("d", "t",
"s")
checkAnswer(
df.select(to_date(col("t"))),
- Seq(Row(Date.valueOf("2015-07-22")),
Row(Date.valueOf("2014-12-31"))))
+ Seq(Row(Date.valueOf("2015-07-22")), Row(Date.valueOf("2014-12-31")),
+ Row(Date.valueOf("2014-12-31"))))
checkAnswer(
df.select(to_date(col("d"))),
- Seq(Row(Date.valueOf("2015-07-22")),
Row(Date.valueOf("2015-07-01"))))
+ Seq(Row(Date.valueOf("2015-07-22")), Row(Date.valueOf("2015-07-01")),
+ Row(Date.valueOf("2014-12-31"))))
checkAnswer(
df.select(to_date(col("s"))),
- Seq(Row(Date.valueOf("2015-07-22")),
Row(Date.valueOf("2014-12-31"))))
+ Seq(Row(Date.valueOf("2015-07-22")),
Row(Date.valueOf("2014-12-31")), Row(null)))
checkAnswer(
df.selectExpr("to_date(t)"),
- Seq(Row(Date.valueOf("2015-07-22")),
Row(Date.valueOf("2014-12-31"))))
+ Seq(Row(Date.valueOf("2015-07-22")), Row(Date.valueOf("2014-12-31")),
+ Row(Date.valueOf("2014-12-31"))))
checkAnswer(
df.selectExpr("to_date(d)"),
- Seq(Row(Date.valueOf("2015-07-22")),
Row(Date.valueOf("2015-07-01"))))
+ Seq(Row(Date.valueOf("2015-07-22")), Row(Date.valueOf("2015-07-01")),
+ Row(Date.valueOf("2014-12-31"))))
checkAnswer(
df.selectExpr("to_date(s)"),
- Seq(Row(Date.valueOf("2015-07-22")),
Row(Date.valueOf("2014-12-31"))))
+ Seq(Row(Date.valueOf("2015-07-22")),
Row(Date.valueOf("2014-12-31")), Row(null)))
+
+ // Now with format
+ checkAnswer(
+ df.select(to_date(col("t"), "yyyy-MM-dd")),
+ Seq(Row(Date.valueOf("2015-07-22")), Row(Date.valueOf("2014-12-31")),
+ Row(Date.valueOf("2014-12-31"))))
+ checkAnswer(
+ df.select(to_date(col("d"), "yyyy-MM-dd")),
+ Seq(Row(Date.valueOf("2015-07-22")), Row(Date.valueOf("2015-07-01")),
+ Row(Date.valueOf("2014-12-31"))))
+ checkAnswer(
+ df.select(to_date(col("s"), "yyyy-MM-dd")),
+ Seq(Row(Date.valueOf("2015-07-22")),
Row(Date.valueOf("2014-12-31")), Row(null)))
--- End diff --
```
scala> val format = new java.text.SimpleDateFormat("yyyy-MM-dd")
format: java.text.SimpleDateFormat = java.text.SimpleDateFormat@f67a0200
scala> format.parse("2014-31-12")
res1: java.util.Date = Tue Jul 12 00:00:00 PDT 2016
```
This is strange to me but is expected behavior.
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