AngersZhuuuu commented on pull request #29085:
URL: https://github.com/apache/spark/pull/29085#issuecomment-661597390
@maropu ArrayType/MapType/StructType data format show as below
```
test("SPARK-32106: TRANSFORM support complex data types as input and ouput
type (hive serde)") {
assume(TestUtils.testCommandAvailable("/bin/bash"))
withTempView("v") {
val df = Seq(
(1, "1", Array(0, 1, 2), Map("a" -> 1)),
(2, "2", Array(3, 4, 5), Map("b" -> 2)))
.toDF("a", "b", "c", "d")
.select('a, 'b, 'c, 'd, struct('a, 'b).as("e"))
df.createTempView("v")
sql(
"""
|SELECT TRANSFORM(c, d, e)
|USING 'cat' as (c, d, e)
|FROM v
""".stripMargin).show()
sql(
"""
|SELECT TRANSFORM(c, d, e)
|USING 'cat' as (c int, d string, e string)
|FROM v
""".stripMargin).show()
sql(
"""
|SELECT TRANSFORM(c, d, e)
|USING 'cat' as (c array<int>, d map<string,int>, e
struct<col1:int, col2:string>)
|FROM v
""".stripMargin).show()
}
}
```
```
+-----+---+---+
| c| d| e|
+-----+---+---+
|012|a1|11|
|345|b2|22|
+-----+---+---+
+----+---+---+
| c| d| e|
+----+---+---+
|null|a1|11|
|null|b2|22|
+----+---+---+
+---------+--------+------+
| c| d| e|
+---------+--------+------+
|[0, 1, 2]|[a -> 1]|[1, 1]|
|[3, 4, 5]|[b -> 2]|[2, 2]|
+---------+--------+------+
```
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