我的Spark数据帧如下所示:
+---+----+---+---+
| a | b | c | d |
+---+----+-------+
|13 | 43 | 67| 3 |
+---+----+---+---+
有没有可能选择特定的列一起评估，以产生以下内容？
+----+----+---+---+-----+-----+-----------+
| a | b | c | d | a+b | c-b | a+b / c-b |
+----+----+-------+-----+-----+-----------+
| 13 | 43 | 67| 3 | 56 | 24 | 2.33 |
+----+----+---+---+-----+-----+-----------+
from pyspark.sql.functions import expr
(
df.withColumn("a+b", expr("a + b"))
.withColumn("c-b", expr("c - b"))
.withColumn("a+b / c-b", expr("(a + b) / (c - b)"))
.show()
)
