>>> df.show()
+--------------+-------+-------+-------+
|       Column1|Column2|Column3|Column4|
+--------------+-------+-------+-------+
|(617)-283-3811|  Salah|  Messi|   null|
|   617-2833811|  Messi| Virgil|  Messi|
|  617-283-3811|Ronaldo|  Messi|Ronaldo|
+--------------+-------+-------+-------+

+--------------+---------+
|       Column1|something|
+--------------+---------+
|(617)-283-3811|     true|
|   617-2833811|     true|
|  617-283-3811|     true|
+--------------+---------+

>>> df = spark.createDataFrame(row_seq)
>>> df2 = df.select("Column2", validate_format_udf("Column2").alias("something"))
>>> df2.show()
+-------+---------+
|Column2|something|
+-------+---------+
|  Salah|    false|
|  Messi|    false|
|Ronaldo|    false|
+-------+---------+