Spark:将行的WrappedArray转换/连接为字符串

import org.apache.spark.sql.functions._

val data = Seq(
  (1, Seq("apple", "banana", "orange")),
  (2, Seq("cat", "dog", "elephant")),
  (3, Seq("red", "green", "blue"))
)

val df = spark.createDataFrame(data).toDF("id", "fruits")

val result = df.withColumn("fruits_string", concat_ws(", ", col("fruits")))

result.show(false)

+---+-------------------+-----------------+
|id |fruits             |fruits_string    |
+---+-------------------+-----------------+
|1  |[apple, banana, orange]|apple, banana, orange|
|2  |[cat, dog, elephant]|cat, dog, elephant|
|3  |[red, green, blue] |red, green, blue |
+---+-------------------+-----------------+