如何在Spark SQL中格式化整数？

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

val df = spark.range(10)
  .select(col("id"), format_number(col("id"), 2).as("formatted_id"))

df.show()

+---+-------------+
| id|formatted_id |
+---+-------------+
|  0|         0.00|
|  1|         1.00|
|  2|         2.00|
|  3|         3.00|
|  4|         4.00|
|  5|         5.00|
|  6|         6.00|
|  7|         7.00|
|  8|         8.00|
|  9|         9.00|
+---+-------------+