+---+------------+
| A| B|
+---+------------+
| x1| [s1]|
| x2| [s2 (A2)]|
| x3| [s3 (A3)]|
| x4| [s4 (A4)]|
| x5| [s5 (A5)]|
| x6| [s6 (A6)]|
+---+------------+
想要的结果：
+---+------------+-------+
|A |B |value |
+---+------------+-------+
|x1 |[s1] |[s1] |
|x2 |[s2 (A2)] |[s2] |
|x3 |[s3 (A3)] |[s3] |
|x4 |[s4 (A4)] |[s4] |
|x5 |[s5 (A5)] |[s5] |
|x6 |[s6 (A6)] |[s6] |
+---+------------+-------+
当我应用下面的每个代码时，它们之前的括号和空格没有被替换：
from pyspark.sql.functions import expr
df.withColumn("C",
expr('''transform(B, x-> regexp_replace(x, ' \\(A.\\)', ''))''')).show(truncate=False)
或者
df.withColumn("C", …