PySpark code

>>> df.withColumn("datetime_ts", col("datetime_str").cast(TimestampNTZType())).show(truncate=False)
+-------------------+-------------------+
|datetime_str       |datetime_ts        |
+-------------------+-------------------+
|2024-12-25 14:30:00|2024-12-25 14:30:00|
|2025-01-01 09:00:00|2025-01-01 09:00:00|
+-------------------+-------------------+

teradatamlspk code

>>> df.withColumn("datetime_ts", col("datetime_str").cast(TimestampNTZType(), format="yyyy-MM-dd HH:mm:ss")).show(truncate=False)
+-------------------+-------------------+
|       datetime_str|        datetime_ts|
+-------------------+-------------------+
|2025-01-01 09:00:00|2025-01-01 09:00:00|
|2024-12-25 14:30:00|2024-12-25 14:30:00|
+-------------------+-------------------+